Step 1: Since 869000000 do not have a decimal point, we will add one at the end of the number 869000000.
869000000.
Step 2: Move the decimal point from its current position (the black dot) to a position immediately to the right of the first nonzero digit (the red dot).
8.69000000.
Step 3: We moved the decimal point 8 spaces to the right. Therefore, the exponent on base 10 will be positive 8.Now we know that the:
Mantissa = 8.69000000 (which can be written as 8.69 )
Exponent = 8
So, the solution is:
$$869000000 = \color{blue}{ 8.69} \cdot 10^{ \color{red}{ 8 }}$$