I am developing a New Responsive Form in association with an already existing SharePoint List.  The two are used together for calculating and recording cable information for engineering purposes.  One of the functions I need in the form, to do the necessary calculations, is the Log function.  And that function apparently does not exist natively in either this or the classic form.  Can anyone tell me if it is possible to do a Logarithm in some other way within the New Responsive Form?