The value of  \(\rm [ \{(232 \div 29 \ of \ 2) + 77 \times 10 \} \div 18] - \frac{18 \times 8 \div 4 \ of \ 3 - 4}{ 2 \times (8 - 6) + 1 - 2 \times 3 \div 4 \ of \ \frac{1}{2}}\) is: