Need help with Calculated Column

Hi, gauravnarchal 

When there is a description of the desired output and requirements and condition judgments, then the solution can be obtained earlier.

try to create a measure like this:

_Result = 
var _is9=DATEDIFF('Table2'[returndate],'Table2'[Shipdate],DAY)*'Table2'[NumberOfItems]
var _not9=DATEDIFF('Table2'[Shipdate],'Table2'[returndate],DAY)*'Table2'[NumberOfItems]
var _extract1=CONVERT(LEFT(RELATED(Table1[SerialNumber]),1),INTEGER)
var _nonconverted=ISERROR(CONVERT(LEFT(RELATED(Table1[SerialNumber]),1),INTEGER))
var _startOfNum=IF(_nonconverted,"Error",IF(_extract1=9,FORMAT(_is9,"General Number"),FORMAT(_not9,"General Number")))
return _startOfNum

Result:

Please refer to the attachment below for details

Hope this helps.

Best Regards,
Community Support Team _ Zeon Zheng
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