$\frac{ 5m \times \left( 5{m}^{2}+2m+6 \right) }{ 5{m}^{3} }$
$\frac{ m \times \left( 5{m}^{2}+2m+6 \right) }{ {m}^{3} }$
$\frac{ 5{m}^{2}+2m+6 }{ {m}^{2} }$