addtion
30+200
230
500-100
400
20x1
20
340x23
7820
4000x567
2268000
200+300
500
200-100
100
20x2
40
300x10
3000
4213x200
842600
6000x200
6200
700-300
400
34x1
34
345x1
345
1234x456
562704
1234x45
1279
500-12
488
23x1
23
789x10
7890
4544x321
1458624
12345+10
12355
456-10
446
54x1
54
123x10
1230
4567x123
561741