Answer
$8.95 \times 10^{-12}$
Work Step by Step
Rearrange Factors:
$= (1.78 \times 5.03)({10^{-7}}\times {10^{-5}})$
Simplify:
$=8.9534 \times 10^{-12}$
Round to the appropriate number of significant digits:
$\approx \boxed{8.95 \times 10^{-12}}$