Chapter P - Section P.2 - Exponents and Scientific Notation - Exercise Set - Page 30: 106

$$1.1 \times 10^7$$

\begin{align} \frac{66,000 \times 0.001}{0.003 \times 0.002} & = \frac{6.6 \times 10^4 \times 1 \times 10^{-3}}{3 \times 10^{-3} \times 2 \times 10^{-3}}\\ &= \frac{6.6 \times 10}{6 \times 10^{-6}} \\ &= 1.1 \times 10^7 \end{align}