subtraction
84-69
15
89+36
125
26x6
156
35/5
7
176-89
87
145+309
454
89x11
979
117/13
9
468-372
96
652+789
1441
124x12
1488
230/23
10
2099-584
1515
1265+3589
4854
124x12
1488
1500/60
25
90542-3308
87234
99256+1,025,489
1,124,745
145x32
4640
1296/36
36