[tex]\bf \cfrac{60}{1+3+5}\implies \cfrac{20}{3}\implies 6\frac{2}{3}\qquad \qquad \qquad \stackrel{\stackrel{1\cdot \frac{20}{3}}{}}{\frac{20}{3}}~:~\stackrel{\stackrel{3\cdot \frac{20}{3}}{}}{20}~:~\stackrel{\stackrel{5\cdot \frac{20}{3}}{}}{\frac{100}{3}}[/tex]
