Depending upon where you are:
→ 787 billion ÷ 200 million = 787 × 10^12 ÷ (200 × 10^6) = (787 ÷ 200) × 10^(12-6) = 3.935 × 10^6 = 3.935 million = 3,935,000
→ 787 billion ÷ 200 million = 787 × 10^9 ÷ (200 × 10^6) = (787 ÷ 200) × 10^9-6 = 3.935 × 10^3 = 3,935
0.04
3.5
0.5714
0.115
5
3.75
3.125
0.1
4
3500
8.8889
0.2