(3x4+4x5)-(12:3+20:4)+2x5-6=
2x5+2x7-2x4=
(6+8):2+18:(5+4)=
3202,5:15=
10000-7845,15=
65982,112+256,3=
756,112:172=
21908765,2+9632=
123654x41,22=
287410,4-56989=
230421,4
5097017,88
16
21918397,2
66238,412
2154,85
4,396
27
9
213,5