解决问题。.O(f2m(Q8|6_)m7n+e
.O(f2m(Q8|6_)m7n+e
算式：提示6p)s0K9~2m0r6q9o*L.Z(d,A8{.O(f2m(Q8|6_)m7n+e
答：5节车皮+_4D0}5i5}，还剩;M4M7b6I3W-j+?吨。.O(f2m(Q8|6_)m7n+e