（2.67+2.67×2+2.67）×25)a0g;D)\:m;C.R(r(~0G.A9\
算式：提示.z5l-v'f2G(W7m3z'N9m)a0g;D)\:m;C.R(r(~0G.A9\
=,V)B3~)a0g;D)\:m;C.R(r(~0G.A9\