In SI units G = 6.67 × 10⁻¹¹ N m² kg⁻², with dimensions [M⁻¹ L³ T⁻²]…

Step 1. Factors. $\left(10^{3}\right)^{-1} = 10^{-3}$, $\left(10^{2}\right)^{3} = 10^{6}$, and the seconds are the same.

Step 2. New number. $6.67 \times 10^{-11} \times 10^{-3} \times 10^{6} = 6.67 \times 10^{-8}$.