√2
23*6=138
49*3=147
1000- 156=844
800-59=741
196:2=98
485:5=97
295-98=197
849-798= 51
√3
300:x = 900-897
300:x=3
x=3*300
x=900
125*3 +y=525
375+y=525
y=525-375
y=150
