Solve 3/5 of 4/7 of 5/12 of 1015 = ?

Answer: Option D

Given $$\frac{3}{5}$$ of $$\frac{4}{7}$$ of $$\frac{5}{12}$$ of 1015
⇒ x = $$\frac{3}{5}$$ × $$\frac{4}{7}$$ × $$\frac{5}{12}$$ × 1015
⇒ x = 145