[ \frac{5}{1+4} \times \frac{2}{10+5} = \frac{5}{5} \times \frac{2}{15} = 1 \times \frac{2}{15} = \frac{2}{15} ]
[ \frac{5}{1+4} \times \frac{2}{10+5} = \frac{5}{5} \times \frac{2}{15} = 1 \times \frac{2}{15} = \frac{2}{15} ]