Hi,
 
I have a module with 2 lists: currency (Local and GBP) and list item e.g. Expense. I input data into Local and Expense cell e.g. 1000. I want to calculate GBP amount of that 1000, by multiplying number in Local cell with FX rate.  How do I write formula for the GBP cell?  I find that I can only write formula for the Line Item.
 

 
Thanks
Andre