6
10 +
21 ×
3 -
17 +
10 +
9 ÷
4 -
13 +
1 -
16 +
40 ×
5 -
18 +
864×
210×
162×
2 -
15 +
40 ×
1 -
3 +
84 ×
2 ×
13 +
576×
3 ×
17 +
9 ÷
18 ×
8 +
45 ×
1 -