Please refer to my previous article to learn more about SharePoint Designer 2013 Workflows.
In this blog you will see how to use “Do Calculation” action in SharePoint Designer 2013.
Description:
Performs an arithmetic calculation and stores the output value in a variable.
In this example, I have a custom list named “Custom” in which I have attached this workflow. When I run a workflow for an item it will perform the calculation.
Workflow Design:
Result:
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