One could make an estimate of the answer by dividing 500 by 75.
That will be (20*25)/(3*25) = 20/3 = 6 2/3 ≈ 6.67
The real answer is about 6.618421
That will be (20*25)/(3*25) = 20/3 = 6 2/3 ≈ 6.67
The real answer is about 6.618421