题目是不是抄错了?最后那应该是/（1/45）吧,否则除以1那多没意思啊?修改后如下：[14.8+(37/2-1.5)*125/3]/(1/45) =[74/5+(37/2-3/2)*125/3]*45 =[74/5+17*125/3]*45 =[74/5+2125/3]*45 =74*45/5+2125*45/3 =666+3187...