6 counters, 2 equal groups
6 ÷ 2 = 3
6 ÷ 3 = 3
6 ÷ 3 = 2
14 counters, 7 equal groups
14 ÷ 7 = 7
14 ÷ 7 = 2
14 ÷ 2 = 7
21 counters, 3 equal groups
21 ÷ 7 = 3
21 ÷ 3 = 7
30 counters, 6 equal groups
30 ÷ 5 = 6
30 ÷ 6 = 5