Correct option is BGiven:(21×37)÷304\left( \frac{21 \times 3}{7} \right) \div \frac{30}{4}(721×3)÷430Solution:9 ÷304 \div \frac{30}{4}÷430 = 9 ×430 \times \frac{4}{30}×304 =65\frac6556