Question : What is the value of $42 \div[18-\{6+(3$ of $4-4-2$ of 5$)\}] ?$

Question : What is the value of $\frac{99 \div 33+44 \div 11 \text { of } 4}{24 \div 12–4+3}$?

Question : What is the value of $\frac{17-8 \times 5+4 \times 3}{5 \times 3 \div 6+2 \times 4} ?$

Question : What is the value of $\frac{14+7-12+15-17+2-3+17}{2+7-9+2-4+22} ?$

Question : What is the value of $\frac{72}{22} \times \frac{11}{3} \div \frac{21}{9}$ of $\frac{18}{7} ?$