a)
[tex]3 \frac{1}{3} \div 1 \times \frac{3}{10} = \frac{10}{3} \times \frac{1}{1} \times \frac{3}{10} = \frac{10}{3} \times \frac{3}{10} = 1[/tex]
b)
[tex]4 \frac{7}{9} \div 5 \frac{3}{7} \times 0 = 0[/tex]
c)
[tex]1 \div \frac{5}{8} \times \frac{5}{8} = 1 \times \frac{8}{5} \times \frac{5}{8} = \frac{8}{5} \times \frac{5}{8} = 1[/tex]
