14:0.72 = 1400:72=175:9=175/9
5/7 :1 = 5/7
3:2 = 3/2
2.
7:0.24 = 700:24 = 175:6
12.6:0.4 = 126:4 = 63:2
5/8 :25/32 = 5/8 * 32/25 = 4/5 = 4:5
全部题阿?