Working with Formulas (Report Builder)
Formulas are calculations performed on values in your report. Sometimes, they are referred to as expressions. A formula can contain functions, operators, constants, and references to fields or entities. You do not need to add an equals sign (=) to a formula in Report Builder because it is implicitly stated.
Formulas can look similar to any of the following:

Sum Line Total

6+12

SUM(IF(Finished Goods Flag, "Finished", "Unfinished"))
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