Step 1: Write both numbers in scientific notation. For more information, use the SN Converter.
$$ 40267984 = 4.0267984\cdot 10^{7} $$$$ 1 = 1 $$Step 2: Multiply the numeric parts. Note that in intermediate calculations, we need 6 significant digits.
$$ 4.02680 \cdot 1 \approx 4.02680 $$Step 3: Multiply $10^{ 7 }$ by $10^{ 0 }$:
$$ 10^{ 7 } \cdot 10^{ 0 } = 10^{ 7+0 } = 10^{ 7 } $$Step 4: Write the solution as the product of the numbers obtained in steps two and three.
$$ 4.02680 \cdot 10^{ 7 } $$