(3/8)×8.4+2(3/5)×0.375-3/8.O3~7@/N*z4y6~(D9p0?.q
算式:提示/Q/p/x,x*v8L2G,Y.O3~7@/N*z4y6~(D9p0?.q
=(U*[)i-[;d.O3~7@/N*z4y6~(D9p0?.q