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Question
What is the quotient and remainder when $ 87129 $ is divided by $ 15 $ ?
Answer
The quotient is 5808 and the remainder is 9.
Explanation
Division Table
|
| | 0 | 5 | 8 | 0 | 8 |
1 | 5 | 8 | 7 | 1 | 2 | 9 |
| – | 0 | | | | |
| | 8 | 7 | | | |
| – | 7 | 5 | | | |
| | 1 | 2 | 1 | | |
| – | 1 | 2 | 0 | | |
| | | | 1 | 2 | |
| | | | – | 0 | |
| | | | 1 | 2 | 9 |
| | | – | 1 | 2 | 0 |
| | | | | | 9 |
STEP 0: set up a division table
|
| | | | | | |
1 | 5 | 8 | 7 | 1 | 2 | 9 |
STEP 1: DIVIDE 8 : 15 = 0 with a remainder of 8
|
| | 0 | | | | |
1 | 5 | 8 | 7 | 1 | 2 | 9 |
STEP 2: MULTIPLY 0 · 15 = 0
|
| | 0 | | | | |
1 | 5 | 8 | 7 | 1 | 2 | 9 |
| | 0 | | | | |
STEP 3: SUBTRACT 8 - 0 = 8
|
| | 0 | | | | |
1 | 5 | 8 | 7 | 1 | 2 | 9 |
| – | 0 | | | | |
| | 8 | | | | |
STEP 4: BRING DOWN
|
| | 0 | | | | |
1 | 5 | 8 | 7 | 1 | 2 | 9 |
| – | 0 | | | | |
| | 8 | 7 | | | |
STEP 5: DIVIDE 87 : 15 = 5 with a remainder of 12
|
| | 0 | 5 | | | |
1 | 5 | 8 | 7 | 1 | 2 | 9 |
| – | 0 | | | | |
| | 8 | 7 | | | |
STEP 6: MULTIPLY 5 · 15 = 75
|
| | 0 | 5 | | | |
1 | 5 | 8 | 7 | 1 | 2 | 9 |
| – | 0 | | | | |
| | 8 | 7 | | | |
| | 7 | 5 | | | |
STEP 7: SUBTRACT 87 - 75 = 12
|
| | 0 | 5 | | | |
1 | 5 | 8 | 7 | 1 | 2 | 9 |
| – | 0 | | | | |
| | 8 | 7 | | | |
| – | 7 | 5 | | | |
| | 1 | 2 | | | |
STEP 8: BRING DOWN
|
| | 0 | 5 | | | |
1 | 5 | 8 | 7 | 1 | 2 | 9 |
| – | 0 | | | | |
| | 8 | 7 | | | |
| – | 7 | 5 | | | |
| | 1 | 2 | 1 | | |
STEP 9: DIVIDE 121 : 15 = 8 with a remainder of 1
|
| | 0 | 5 | 8 | | |
1 | 5 | 8 | 7 | 1 | 2 | 9 |
| – | 0 | | | | |
| | 8 | 7 | | | |
| – | 7 | 5 | | | |
| | 1 | 2 | 1 | | |
STEP 10: MULTIPLY 8 · 15 = 120
|
| | 0 | 5 | 8 | | |
1 | 5 | 8 | 7 | 1 | 2 | 9 |
| – | 0 | | | | |
| | 8 | 7 | | | |
| – | 7 | 5 | | | |
| | 1 | 2 | 1 | | |
| | 1 | 2 | 0 | | |
STEP 11: SUBTRACT 121 - 120 = 1
|
| | 0 | 5 | 8 | | |
1 | 5 | 8 | 7 | 1 | 2 | 9 |
| – | 0 | | | | |
| | 8 | 7 | | | |
| – | 7 | 5 | | | |
| | 1 | 2 | 1 | | |
| – | 1 | 2 | 0 | | |
| | | | 1 | | |
STEP 12: BRING DOWN
|
| | 0 | 5 | 8 | | |
1 | 5 | 8 | 7 | 1 | 2 | 9 |
| – | 0 | | | | |
| | 8 | 7 | | | |
| – | 7 | 5 | | | |
| | 1 | 2 | 1 | | |
| – | 1 | 2 | 0 | | |
| | | | 1 | 2 | |
STEP 13: DIVIDE 12 : 15 = 0 with a remainder of 12
|
| | 0 | 5 | 8 | 0 | |
1 | 5 | 8 | 7 | 1 | 2 | 9 |
| – | 0 | | | | |
| | 8 | 7 | | | |
| – | 7 | 5 | | | |
| | 1 | 2 | 1 | | |
| – | 1 | 2 | 0 | | |
| | | | 1 | 2 | |
STEP 14: MULTIPLY 0 · 15 = 0
|
| | 0 | 5 | 8 | 0 | |
1 | 5 | 8 | 7 | 1 | 2 | 9 |
| – | 0 | | | | |
| | 8 | 7 | | | |
| – | 7 | 5 | | | |
| | 1 | 2 | 1 | | |
| – | 1 | 2 | 0 | | |
| | | | 1 | 2 | |
| | | | | 0 | |
STEP 15: SUBTRACT 12 - 0 = 12
|
| | 0 | 5 | 8 | 0 | |
1 | 5 | 8 | 7 | 1 | 2 | 9 |
| – | 0 | | | | |
| | 8 | 7 | | | |
| – | 7 | 5 | | | |
| | 1 | 2 | 1 | | |
| – | 1 | 2 | 0 | | |
| | | | 1 | 2 | |
| | | | – | 0 | |
| | | | 1 | 2 | |
STEP 16: BRING DOWN
|
| | 0 | 5 | 8 | 0 | |
1 | 5 | 8 | 7 | 1 | 2 | 9 |
| – | 0 | | | | |
| | 8 | 7 | | | |
| – | 7 | 5 | | | |
| | 1 | 2 | 1 | | |
| – | 1 | 2 | 0 | | |
| | | | 1 | 2 | |
| | | | – | 0 | |
| | | | 1 | 2 | 9 |
STEP 17: DIVIDE 129 : 15 = 8 with a remainder of 9
|
| | 0 | 5 | 8 | 0 | 8 |
1 | 5 | 8 | 7 | 1 | 2 | 9 |
| – | 0 | | | | |
| | 8 | 7 | | | |
| – | 7 | 5 | | | |
| | 1 | 2 | 1 | | |
| – | 1 | 2 | 0 | | |
| | | | 1 | 2 | |
| | | | – | 0 | |
| | | | 1 | 2 | 9 |
STEP 18: MULTIPLY 8 · 15 = 120
|
| | 0 | 5 | 8 | 0 | 8 |
1 | 5 | 8 | 7 | 1 | 2 | 9 |
| – | 0 | | | | |
| | 8 | 7 | | | |
| – | 7 | 5 | | | |
| | 1 | 2 | 1 | | |
| – | 1 | 2 | 0 | | |
| | | | 1 | 2 | |
| | | | – | 0 | |
| | | | 1 | 2 | 9 |
| | | | 1 | 2 | 0 |
STEP 19: SUBTRACT 129 - 120 = 9
|
| | 0 | 5 | 8 | 0 | 8 |
1 | 5 | 8 | 7 | 1 | 2 | 9 |
| – | 0 | | | | |
| | 8 | 7 | | | |
| – | 7 | 5 | | | |
| | 1 | 2 | 1 | | |
| – | 1 | 2 | 0 | | |
| | | | 1 | 2 | |
| | | | – | 0 | |
| | | | 1 | 2 | 9 |
| | | – | 1 | 2 | 0 |
| | | | | | 9 |
STEP 19: SUBTRACT 129 - 120 = 9
|
| | 0 | 5 | 8 | 0 | 8 |
1 | 5 | 8 | 7 | 1 | 2 | 9 |
| – | 0 | | | | |
| | 8 | 7 | | | |
| – | 7 | 5 | | | |
| | 1 | 2 | 1 | | |
| – | 1 | 2 | 0 | | |
| | | | 1 | 2 | |
| | | | – | 0 | |
| | | | 1 | 2 | 9 |
| | | – | 1 | 2 | 0 |
| | | | | | 9 |
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