addition
subtraction
multiplication

100

-5+8=

3

100

7-10=

-3

100

546+235

200

918+1987

2905

200

-400-[274]

-674

300

-200+899=

699

300

23108637407842313-86342637086=

551065205227

400

-600+900+50+12+89=

451

400

435-954

-529

500

589+[-265]

324

500

-345 -[235]

-580