Help with DAX formulas

Hi Syndicate_Admin 

I think you want to get sum of quantity Per LOT from one Table and then multiply the sum with unit price in another table Per LOT. Due to your screenshot is not clear, I have built an sample for testing by myself. 

Quantity Table:

Unit Price Table:

Measure:

Multiply Per LOT = 
VAR _Quantiy = SUM(Quantity[Quantity])
VAR _Untity = SUMX(FILTER(ALL('Unit Price'),'Unit Price'[Lot] = MAX(Quantity[Lot])),'Unit Price'[Unit Price])
RETURN
 _Quantiy * _Untity

Result:

Best Regards,

Rico Zhou

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