小明一家乘火车去旅游，每张火车票215元，回来还乘火车，这次旅游买火车票一共花了多少钱？.{3L7_1[9A2P;B.Z3r+x+F0M6H3t7P2N
算式：提示;E1W/h-f)x2j.{3L7_1[9A2P;B.Z3r+x+F0M6H3t7P2N
答：这次旅游买火车票一共花了7J,].W.C2O元。.{3L7_1[9A2P;B.Z3r+x+F0M6H3t7P2N