20×89+34÷98 16−13÷9+19×4
78×2.4+6.6×87.5%+1÷117 214÷[(56−34)×1.2+45]
7.8÷0.2=
72×2-3.5=
12×(23-12)=
13-15+13=
4×(1-10%)=
58-62.5%=
13+50%=
47÷12+37×2=
13.7-3.6-4.3-2.1
0.59×101
2.5×12.5×40×0.8
(12−16+512)×24
24×15+75÷5+15
9×3.45+11.1×180%+54.3÷119