3
3
42 ×
6
7
2
2
20 ×
1
4
15 ×
5
42 ×
6
7
1
1
2 ÷
4
2
5
3
21 ×
7
3
192×
4
6
5
5
2 ÷
1
2
40 ×
5
4
2
7 ×
7
21 ×
3
2 ÷
6
4 ×
1
2
30 ×
5
6
1
7
3
4
4
5 ÷
1
5
18 ×
3
6
588×
2
7
1
120×
2
3
5
4
7
6