For more details regarding the functions in this recipe, please refer to the following links:
- Gross Margin Definition: https://www.investopedia.com/terms/g/grossmargin.asp
- SELECTEDVALUE: https://docs.microsoft.com/en-us/dax/selectedvalue-function-dax
- DIVIDE: https://docs.microsoft.com/en-us/dax/divide-function-dax
- BLANK: https://docs.microsoft.com/en-us/dax/blank-function-dax