The results of the calculations are:
- \( \frac{17}{5} \times \frac{14}{5} = \frac{238}{25} \)
- \( \frac{13}{4} \times \frac{17}{4} = \frac{221}{16} \)
- \( \frac{13}{4} \times \frac{1}{2} = \frac{13}{8} \)
Thus, the final answers are:
\[
\boxed{\frac{238}{25}, \frac{221}{16}, \frac{13}{8}}
\]