What is the value of $\frac{\frac{1}{2}÷\frac{1}{2}×\frac{1}{2}+\frac{1}{2}×\frac{1}{2}÷\frac{1}{2}}{\frac{1}{4}×\frac{1}{4}÷\frac{1}{2}+\frac{1}{4}÷\frac{1}{4}×\frac{1}{2}-\frac{1}{4}÷\frac{1}{2}×\frac{1}{2}}$?

8 2 4 1

4