$$
\left[\frac{1}{2}+\left(\frac{2}{3}\right)^2 \cdot\left(\frac{3}{4}\right)^2\right] \cdot\left[\left(\frac{8}{15} \cdot \frac{3}{4}+\frac{8}{3}\right): \frac{23}{5}+\left(1-\frac{5}{3}\right)^2\right]+\frac{1}{6}-1
$$
$$
\left[\frac{1}{2}+\left(\frac{2}{3}\right)^2 \cdot\left(\frac{3}{4}\right)^2\right] \cdot\left[\left(\frac{8}{15} \cdot \frac{3}{4}+\frac{8}{3}\right): \frac{23}{5}+\left(1-\frac{5}{3}\right)^2\right]+\frac{1}{6}-1
$$
Numero 653