954:3+512:4=...
234*4+147*5=
672:8-441:9=
129*6+113*2=
9*8:12=
7*8:14=
45000:100=
6000*100=
954:3=318,512:4=128,318+128=446,234*4=936,147*5=735,936+735=1671,