A rope is cut off (1/5) for the first time, and its full length (1/4) is cut off for the second time. A total of 18 meters is cut. How many meters are left?
一根绳子第一次剪去(1/5)，第二次剪去全长的(1/4)，总共剪去18米，还剩下多少米？
<result>12</result>