when someone asks how many x in y, that means you divide y by x.
How many dozens in 24 eggs? 24/12 = 2
So, you need to divide
(4 4/20) / (3 3/20) = 84/63 = 4/3 = 1 1/3
How many 3 3/20 are there in 4 4/20?
2 answers
(84 / 20) / (63 / 20) ... reduce the fraction