15+6
21
11x3
33
(43+7)4
284
34-17
17
56/7
8
23+6*(4-1)
26
54-76
-22
169/13
13
(10-4)2/3+7
19
-256+586
330
153x294
44982
18/(32-6)+2 *42
35
11/18 +20/37
767/666
223020/236
945
8/2(2+2)
16