| 837000-(821309+621000)=-605309 | -194389-(-38558+564821)=-720652 |
| -300119-(-339288-636403)=675572 | -454302+(-259596+406420)=-307478 |
| -536704-(447603-950000)=-34307 | 390000+(234509-554616)=69893 |
| 988010-(731315-519525)=776220 | 980077-(676565-576488)=880000 |
| 510000+(-180000-134000)=196000 | -129191-(656039-736523)=-48707 |
| -12042-(528753+18635)=-559430 | 49794+(-371000+727619)=406413 |
| 720000+(-768990-783126)=-832116 | -699152-(96482+199345)=-994979 |
| 643213-(418917+133279)=91017 | 504566-(-185000+789566)=-100000 |
| 0+(115977-435884)=-319907 | -72125+(-104107+214663)=38431 |
| -513277+(-3382-25529)=-542188 | -197869+(-64553-270000)=-532422 |
| 244706-(-793942+118087)=920561 | 988371+(-420612-791365)=-223606 |
| -803627-(-282182-365445)=-156000 | -700373+(352290-498247)=-846330 |
