CRM workflows can be used to do simple calculations....
I have come across many who are not aware of this feature and thought it would be a good topic for a blog.
In this example, the workflow is doing a simple calculation.
Opportunity form: Add an attribute called Weighted Revenue of type money
Now Create a workflow that calculates the weighted revenue value from Est. Revenue and Probability. In CRM we capture probability as a whole number so Weighted Revenue = Est. Revenue * (Probability*0.01).
Set Weighted Revenue to Probability
Multiply the value in Weighted Revenue field by 0.01. This is done using Operator "Multiply by",
Now Multiply Weighted Revenue field by Est. Revenue