Given that Mike made a 9 inch sub sandwich which he needs to cut it into 2/3 inch pieces.
The number of pieces he will be able to cut is given by
[tex] \frac{9}{ \frac{2}{3} } = \frac{9\times3}{2} = \frac{27}{2} =13.5[/tex]
Therefore, he will be able to cut out 13 pieces with a remainder that is not up to the size of the other pieces.