496+25x4x4=496+400=896,350-60/4x15=350-15x15=350-225=125,1.25x8x4x0.25=10x1=10,48.5x(7.9+2.1)=48.5x10=485,15/13x39x713/45
45分之713分之8
496+25x4x4=496+400=896,350-60/4x15=350-15x15=350-225=125,1.25x8x4x0.25=10x1=10,48.5x(7.9+2.1)=48.5x10=485,15/13x39x713/45
45分之713分之8