Accountant to help with simple ROI calculations project

Job ID: 33576516

Budget: $30 – $250 AUD

This is a project for a CPA or Chartered Accountant who understands ROI and also has an understanding of digital marketing - such as online advertising, email marketing etc.
I need an article written about how to calculate ROI in a range of situations. The focus is on providing examples with numbers and showing the equations to use. (I have put together a series of sample articles with links for you to reference - but I need original content.)
The scenarios would include the following - and probably be 250 to 450 words for each:
* ROI from a new website
* ROI from SEO
* ROI from social media
* ROI from online advertising
Notes:
Please provide the cost for the complate project.
You must have strong finance AND English skills.
The price you bid is the price I will accept.