## Precalculus: Mathematics for Calculus, 7th Edition

$78,250,000,000 = 7.825 \times 10^{10}$
To write the given number in scientific notation, do the following steps: (i) Move the decimal point 10 places to the left to have $7.825$. (ii) Multiply $10^{10}$ to retain the values and have: $78,250,000,000 = 7.825 \times 10^{10}$