Solution - Simplification or other simple results

Step  1  :

            g
 Simplify   —
            l

Equation at the end of step  1  :

   u        g
  (— • a) • —
   l        l

Step  2  :

            u
 Simplify   —
            l

Equation at the end of step  2  :

   u        g
  (— • a) • —
   l        l

Step  3  :

Multiplying exponential expressions :

 3.1    l¹ multiplied by l¹ = l^{(1 + 1)} = l²

Final result :

  uag
  ———
  l2