1.26÷〔1.26 x0.8〕=1.26÷1.26 ÷0.8=12.5
1.26÷〔1.26 x0.8〕=1.26÷1.26÷0.8=1÷0.8=1.25
0
1.26÷〔1.26 x0.8〕=1.26÷1.26 ÷0.8=12.5
1.26÷〔1.26 x0.8〕=1.26÷1.26÷0.8=1÷0.8=1.25