Addition
400+900
1,300
9,000-8,541
459
679,546x245,464
1.66804079e11
500+80,894
81,394
754,338-432,561
321,673
20x13
260
9,563+94,075
103,638
543-300
243
50x34
1,700
103,687+504,939
608,626
784-634
150
5,000x9
45,000
752,044+501,399
1,253,443
1,243-1,123
120
1,000x6,000
6,000,000