Why my calculation is showoing wrong?

I have calculations on the in/cm field and they're not working.  Can you help me figure out why?

Thanks

https://form.jotform.com/63054600839152

Thank you for contacting our support.

First, when you are using calculations with numbers make sure that all variables are number type, that means that all fiels have '0-9' next to them, like here:

You can switch between number and text by clicking them.

Second, since you are dividing at the end, you have to put all calculations before divider into brackets since divide calculation is older than all other calculations so, like this:

You see, all adds and multiplies are in brackets.

That should give you the correct result.

If you have additional questions do not hesitate to contact us.

Thank you!