Evaluate and fully simplify:
$\frac{7x}{5}\times\frac{y}{4}$7x5×y4
Evaluate and fully simplify:
$\frac{20p}{7}\times\frac{7q}{16}$20p7×7q16
Evaluate and fully simplify:
$\frac{2x}{5}\div\frac{y}{3}$2x5÷y3
Evaluate and fully simplify:
$\frac{6p}{11}\div\frac{10q}{7}$6p11÷10q7