Simplify :- \(\frac{{\left[ {3\frac{1}{4} \div \left\{ {1\frac{1}{4} - 0.5\left( {2\frac{1}{2} - \overline {\frac{1}{4} - \frac{1}{6}} } \right)} \right\}} \right]}}{{5 \times \frac{1}{{15}}}}\)