One could make an estimate of the answer by dividing

That will be (20*25)/(3*25) = 20/3 = 6 2/3 ≈ 6.67

The real answer is about 6.618421

**500 by 75**.That will be (20*25)/(3*25) = 20/3 = 6 2/3 ≈ 6.67

The real answer is about 6.618421