56 ×
18 ×
20 ×
30 ×
21 ×
2 ×
15 ×
2 ×
18 ×
28 ×
20 ×
42 ×
6 ×
6 ×
6 ÷
2 ÷
245×
6 ×
4 ×
20 ×
42 ×
15 ×
2 ÷