how many sets of 4 are there in sets of 24?
You can do this by subtracting four from twenty-four and count how many times you can do this before you get to zero.
24 - 4 = 20; // 1
20 - 4 = 16; // 2
16 - 4 = 12; // 3
12 - 4 = 8; // 4
8 - 4 = 4; // 5
4 - 4 = 0; // 6
So, four can go into twenty-four six times.