Esim.1 Laske

a) [[$ 3\cdot \frac{4}{5} $]]​

b) [[$ \frac{2}{3}\cdot \frac{1}{5} $]]​

c) ​[[$ \frac{2}{3}\cdot \frac{5}{8} $]]​​

d) [[$ \frac{4}{15}\cdot \frac{3}{16} $]]​​