Evaluate the following:

(i) $\dfrac{2}{5} \times \dfrac{3}{7}$

(ii) $\dfrac{3}{5} \times \dfrac{8}{9}$

(iii) $7 \times 1\dfrac{2}{3}$

Evaluate the following:

(i) $\dfrac{2}{3} \times 60$

(ii) $\dfrac{4}{7} \times 280$

(iii) $\dfrac{2}{3}$ of $1\dfrac{4}{9}$

Evaluate the following:

(i) $\dfrac{8}{21} \div 4$

(ii) $\dfrac{4}{15} \div \dfrac{2}{5}$

(iii) $8 \div \dfrac{5}{6}$

(iv) $5\dfrac{1}{4} \div \dfrac{7}{8}$

(v) $5\dfrac{1}{3} \div 1\dfrac{1}{9}$

Find the following:

(i) $\dfrac{2}{11}$ of ₹ 715

(ii) $\dfrac{4}{9}$ of 405 kg

(iii) $\dfrac{3}{7}$ of 4 hours 40 minutes