Advanced Excel Skills Needed for part time work

I need someone to help me that has advanced Excel skills. I will pay $50 for each task completed. This will be a part-time job and the applicant that gets the job will be hired whenever necessary. This can become part of your other work, but this job might not become permanent. Although it pays well and if you can find a solution to the problem I have quickly, then it pays really well.

I need someone to help me with the following tasks:

Updating financial models
Updating financial forecasting
Mist have Advanced Macros skills
Well versed in Sensitivity Analysis

All applicants will be given a problem to solve so I can test your abilities in the real world, the first person to solve it will be given the job and will walk away with the first $50 for solving this task. I will then be calling this person exclusively in the future should I need any freelance work completed.