| -662254+(980000-810000)=-492254 | 679907+(-796090-860000)=-976183 |
| 823409-(301420+328259)=193730 | -472145+(-134083+104447)=-501781 |
| 137296-(-551043-158324)=846663 | 21327-(693899+147500)=-820072 |
| 395000+(-194339-826632)=-625971 | -610460-(174935-784492)=-903 |
| -23798-(302178+441218)=-767194 | 288581+(907091-563228)=632444 |
| 365973-(816000-230027)=-220000 | -210581-(857714-810000)=-258295 |
| 570000+(-760000+260981)=70981 | -961235+(400208-106077)=-667104 |
| 28920-(-892291+138211)=783000 | -54860-(-544135+595931)=-106656 |
| -876163-(-644914-729085)=497836 | 300000-(-270267-380000)=950267 |
| 476300+(-865396-510904)=-900000 | -181457+(-85897+667354)=400000 |
| -272000+(-379842-290958)=-942800 | -720000+(-32252-186594)=-938846 |
| -966461-(-814764-770935)=619238 | -369839-(-171437-878402)=680000 |
