12 ×
21 ×
10 ×
7 ÷
4 ×
15 ×
4 ÷
24 ×
10 ×
126×
8 ×
7
30 ×
4 ÷
15 ×
3 ÷
15 ×
42 ×
14 ×
4
30 ×
42 ×
3
4