Take the reciprocal of it and you get 1 / 18.5
18.5 can be written as: 18 1/2 = 37 / 2
You want the reciprocal of 37 / 2, then all you do is flip it and it becomes:
2 / 37 - That is it.
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I am assuming you mean 0.054 (Sorry, latex not working...)
Since this is a repeating decimal, we put it over [ the amount of spaces after the decimal * 9 ] (not multiplied, just that amount of 9's: ex if there was 7 spaces after the decimal, it would be 9999999)
This is 3 * 9 = 999
Now, we put 54 in the numerator:
54 6
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999 111
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Therefore, the answer is | 6/111 | (yikes, this is much uglier than the /boxed{} command)
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:)