How much is Two thirds of... (2/3)
[tex] \frac{1 \\ \\ }{2} [/tex]
[tex]2 \div \frac{3}{5} [/tex]
[tex] \frac{2}{3} \div\frac{2}{7} [/tex]
Does anyone have a good explanation?
(Question in the book says no calculator allowed)

Thanks! ​