7又2分之1乘以8又9分之3乘以12.5乘数中铅以0.032加5.95除以18分之5减7.2加6.05乘薯好以3又5分培御之3
=15/2×25/3×25/2×0.032+5.95×18/5-7.2+6.05×18/5
=（15/2×0.2）×（25/3×0.4）×（25/2×0.4）+（5.95-2+6.05）×18/5
=1.5×10/3×5+10×18/5
=25+36
=61
7又2分之1乘以8又9分之3乘以12.5乘以0.032加5.95除以18分之5减7.2加6.05乘以3又5
7又2分之1乘以8又9分之3乘以12.5乘数中铅以0.032加5.95除以18分之5减7.2加6.05乘薯好以3又5分培御之3
=15/2×25/3×25/2×0.032+5.95×18/5-7.2+6.05×18/5
=（15/2×0.2）×（25/3×0.4）×（25/2×0.4）+（5.95-2+6.05）×18/5
=1.5×10/3×5+10×18/5
=25+36
=61