Answer
$3\times10^{-8}$
Work Step by Step
$$\frac{7.5\times10^{-2}}{2.5\times10^{6}}$$
Regroup like terms then simplify
$$=(\frac{7.5}{2.5})(\frac{10^{-2}}{10^{6}})$$
When dividing exponential expressions with the same non-zero base, subtract the exponent of the denominator from the exponent of the numerator.
$$=3\times10^{(-2-6)}$$
$$=3\times10^{-8}$$
