1.987-187=800
2.1709*6=12354
3.800:20=40
4.12354+40=12394
1.960275-5328=954947
2.5400:9=600
3.954947*4=4201868
4.4201868+600=4202468
1.987-187=800
2.1709*6=12354
3.800:20=40
4.12354+40=12394
1.960275-5328=954947
2.5400:9=600
3.954947*4=4201868
4.4201868+600=4202468