3 1/0 is not defined. As you've typed it, it looks like division by zero.
Let's rearrange 3.23, 305%, 3 2/15 as necessary:
3.23, 3.05, 3.133
Clearly, 3.05 is smallest and 3.23 is largest. Thus: 3.05, 3.133, 3.23.
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