| -265000+(343507-640000)=-561493 | 348273-(497100+700000)=-848827 |
| -260304-(215440+212032)=-687776 | -293894-(-376970+283076)=-200000 |
| -8000+(-431411-489869)=-929280 | -406061-(401289-284000)=-523350 |
| -448176-(-532000+883824)=-800000 | 57322-(-646176-166502)=870000 |
| -464950-(164617+369006)=-998573 | 308847-(-495500-168946)=973293 |
| 720000+(-701100+349100)=368000 | -310691+(971744-560517)=100536 |
| -830200-(-870000-150000)=189800 | 921336+(154128-275464)=800000 |
| 57572-(-203492+572288)=-311224 | -289590+(-480852+770442)=0 |
| -454302+(-259596+406420)=-307478 | 720000+(-759395+262893)=223498 |
| 387931+(-916413+897713)=369231 | 77471-(-308242-83752)=469465 |
| -368272-(-110000-177272)=-81000 | 374009-(883959-680000)=170050 |
| 647216+(618643-660020)=605839 | 677480+(-567441-831100)=-721061 |
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