32+9÷(19-16)-25= 3×3×7-(7×2-1)+28÷4= 420÷7×8-24÷6= 16+560÷7-21= 3×9-21÷3-(16-10)+2= (28÷7)+(36÷9+2×11)×2-20=

32+9:(19-16)-25=10
3*3*7-+7*2-1)+28:4=57
420:7*8-24:6=476
16+560:7-21=75
3*9-21:3-(16-10)+2=16
(28:7)+(36:9+2*11)*2-20=36