How many times does 20 go into 25?
$${\frac{{\mathtt{25}}}{{\mathtt{20}}}} = {\frac{{\mathtt{5}}}{{\mathtt{4}}}} = {\mathtt{1.25}}$$
20 can go in 25 only 1 time (20x1=20, and then 20x2=40, which is too high)
20 goes one into 25 one single time, and leave a remainder of 5.
25 mod 20 = 5
Where "mod" stands for modulo.
how many times doe 20 go into 3768