The answer will depend on what is wrong with it.
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four and one third as an improper fraction = 13/3
2/6
4 1/3 as an improper fraction = 13/3
Either place a dot of the 3, or write it as a fraction. As a mixed number fraction it is six and one third, and as a top-heavy fraction, 19/3.
one third or one over three in figures is 1/3