Answer
$2.3\times10^{3}$
Work Step by Step
$$\frac{6.9\times10^{8}}{3\times10^{5}}$$
Regroup like terms then simplify
$$=(\frac{6.9}{3})(\frac{10^{8}}{10^{5}})$$
When dividing exponential expressions with the same non-zero base, subtract the exponent of the denominator from the exponent of the numerator.
$$=2.3\times10^{(8-5)}$$
$$=2.3\times10^{3}$$
