43.5-{2-[0.35÷（1-0.375）×0.6]}×0.25 =43.5-[2-(0.35÷0.625×0.6)]×0.25 =43.5-(2-0.336)×0.25 =43.5-1.664×0.25 =43.5-0.416=43.084333387.5×79+790×66661.25=333387.5×79+79×10×66661.25=333387.5×...