Solution - Simplification or other simple results

\frac{1}{2} 57 = 6.93889 \cdot 10^{- 18}

1/2^57=6.93889*10^-18

Step 1 :

             1 
 Simplify   ———
            2⁵⁷

   1                                    
  ——— = 6.93889 • 10^-18 
  2⁵⁷

How did we do?