42 ×
12 ×
15 ×
4 ×
4 ÷
70 ×
72 ×
6 ×
15 ×
7 ÷
28 ×
210×
84 ×
50 ×
4 ÷
24 ×
6
3
6
21 ×
2 ÷
20 ×