$$B=\frac{5}{7}\times\frac{3}{15}; C=\frac{6^{\prime}}{26}\times\frac{13}{7^{2}}; D=8\times\frac{12s^{\prime}u}{r}; E=\frac{12}{13}\times\frac{6}{12}$$
$B=\frac{1}{7}\approx 0.142857143$
$C=\frac{1}{4}=0.25$
$D=16$
$E=1$
