+
123+123=
246
123-3
120
43x2=
86
543+345=
888
321-20=
301
433x2=
866
jkl+54=100
46
654-100=
554
1234x2
2468
fish+fish=
8
9870-2000=
7870
2468345563544554324543254342653426734x0=
0
1234567890+1
1234567891
999999999-111111111=
888888888
3333333x3=
9999999