| 223451-(670883-507830)=60398 | 200000+(945860-245860)=900000 |
| 291277+(21383+596973)=909633 | 958263-(400798+215733)=341732 |
| 979904-(610494-240590)=610000 | 230000+(457723+82277)=770000 |
| 780500-(812264-55251)=23487 | 729820-(262773+312399)=154648 |
| 826458-(200464-107288)=733282 | 632097-(123273+7705)=501119 |
| 867416-(428912+400000)=38504 | 303597+(830793-240962)=893428 |
| 806372-(343327+234045)=229000 | 110632+(788897+7382)=906911 |
| 227609+(377085-210000)=394694 | 103969-(730678-665000)=38291 |
| 540000+(452303-294123)=698180 | 871806-(119805+430056)=321945 |
| 277714+(72818+514959)=865491 | 257503+(211694+430803)=900000 |
| 1675+(123843-75298)=50220 | 300000+(7414+118815)=426229 |
| 250000+(976092-650487)=575605 | 845443-(978650-513207)=380000 |
