Predict Likes and Reshares?

Start with any positive real number $n$.

1. For every like that my next problem will get, multiply $n$ by $2$.
2. For every reshare that my next problem will get, multiply 1 by the number you got in step 1 that many times.
3. Calculate $\log _{2}$ of the number you got in step 2.
4. Divide by the number of reshares my next problem will get.
5. Subtract the number of likes my next problem will get.
6. Take $2$ to the power of the number you got in step 5.
7. Finally, subtract $n$ from the number you have.

What is the result?