## Elementary Technical Mathematics

$$5 \times 10^6 \ MW.$$
Since 1 MW =$10^{6}$ W, then 1 W = $10^{-6}$ MW. So we have $$5\times 10^{12} \ W= 5 \times 10^{12} \times 10^{-6} \ MW=5 \times 10^6 \ MW.$$