Correct Answer - Option 3 : 0.00075430991317
Given:
3178.579 ÷ 42.1389 = 75.430991317
Calculations:
⇒ 31.78579 ÷ 42138.9
⇒ (3178.579/100) ÷ (42.1389 × 1000)
⇒ (3178.579 ÷ 42.1389) ÷ 100000
⇒ 75.430991317 ÷ 100000 = 0.00075430991317
∴ 31.78579 ÷ 42138.9 is 0.00075430991317.