72 ×
4 -
1 -
2 ÷
13 +
3 ×
105×
1
1 -
70 ×
3 -
42 ×
4 ÷
7 ÷
13 +
9 +
18 ×
14 ×
9 +
6 ÷
7 ÷
13 +