商店运来一批白布和花布，运进白布150米，花布的米数是白布的4倍。这批布一共多少米？5Z7t.X
算式：提示5a6x1b5Z7t.X
答：批布一共2v'e3{'d-V:z5z(k7d;s/^米5Z7t.X