You just have to multiplied :)
[tex] \frac{1}{2} * \frac{2}{3}
= \frac{1*2}{2*3}
= \frac{2}{6}
= \frac{1*2}{3*2}
= \frac{1}{3} [/tex]
In short, the final answers : [tex] \frac{1}{3} [/tex] and [tex] \frac{2}{6} [/tex]
Both answers are equivalent to each other
Hope this helps !
Photon