This is my big gripe with MachForm; that you can't have multiple basic number calculations like you can easily achieve in Excel (at least not without knowing javascript). Pretty much everything else with MachForm has been great! I've been making online forms to replace paper forms for the company I work for. Unfortunately, there are a chunk of those that would require multiple number calculations, so currently can't use MachForm as a solution for those.
For example: If you have a form with several numerical inputs for each line item and want an "end calculation" for each line item - you just can't do that. If you only had ONE line item, then you can do a work around with current Payment feature if your needed calculation falls within the Payment feature.
Example Layout of what I'm thinking:
LineItem1 (ValueInput1) (ValueInput2) (ValueInput3) [CalculationOfVariableValueInputs]
LineItem2 (ValueInput1) (ValueInput2) (ValueInput3) [CalculationOfVariableValueInputs]
LineItem3 (ValueInput1) (ValueInput2) (ValueInput3) [CalculationOfVariableValueInputs]
LineItem4 (ValueInput1) (ValueInput2) (ValueInput3) [CalculationOfVariableValueInputs]
(Imagining "ValueInput" as an existing number field & ability to define which "ValueInputs" to calculate for each "CalculationOfVariableInputs")
Calculations I would like:
Addition
Subtraction
Multiplication
Division
Average
Percentage
I would really LOVE to see this be added to MachForm!!!