How to get re-computed cell value with formula?

I have a scenario wherein we need to use an existing excel file to compute for a specific value.

the excel file contains input fields that are used in computing a value for a specific cell. However when I try to write new value in the input fields in the excel file, the cell that is recomputing does not change value. 

Is there a way to refresh the cell with formula based on new inputs given?

HI Lawrence,

It seems you're not talking about standard Platform functionality. Perhaps you meant to write in a Forge component forum? If so, next time select the "Support" tab while viewing the component, then press the "New discussion" button.