（1/5+1/3）×154C5x4U;w)B4j/I+^;~)U5D-v/w.q
算式：提示6V1w,y6[4C5x4U;w)B4j/I+^;~)U5D-v/w.q
=9b(\3s:c4C5x4U;w)B4j/I+^;~)U5D-v/w.q