There are an infinite number of ways to write that same number.
Here are a few of them:
1/3.5
4/14
20/70
6/21
226/791
2/7, 4/14, 6/21
2/7
2/5 = 4/10
2/7 times 4/5 = 8/35
2/9 x 7/18 = 14/162 or 7/81
0.6667
0.2
40
0.4
1/12
3 over 5 is the same as 9 over 15 so x = 7 over 15.
2/4 = 1/2