18:24 4.5:15 0.72:0.6 1:0.25 3/118:24 4.5:15 0.72:0.6 1:0.25 3/1:5/4 6:3/5

问题描述:

18:24 4.5:15 0.72:0.6 1:0.25 3/1
18:24 4.5:15 0.72:0.6 1:0.25 3/1:5/4 6:3/5

18:24 4.5:15 0.72