7 +
5 ÷
11 +
48 ×
16 ×
9 +
1 -
21 +
21 ×
24 ×
40 ×
7 +
48 ×
84 ×
11 +
2 -
15 +
12 ×
14 +
42 ×
8 +
224×
3 ÷
1 -
15 +
1 -