每块蛋糕4元钱，7块这样的蛋糕多少元钱？+V,\*w.v/W,e
算式：提示6?)M1{2F9u:H+z1o:l/s9P9o.?+V,\*w.v/W,e
答；7块这样地蛋糕,o6{9d2[)H元钱。+V,\*w.v/W,e