Evaluate the Expression Using Exponential Rules $\frac { 20 \times 10 ^ { 6 } } { 5 \times 10 ^ { 4 } }$

Evaluate the expression using exponential rules. Write the result in standard notation.
- $\frac { 20 \times 10 ^ { 6 } } { 5 \times 10 ^ { 4 } }$

A) -0.04
B) -400
C) 400
D) 0.04