Calculations in item custom field

Calculations in item custom field

Dear Sirs,

   Is it possible to do math inside items in Zoho Books? My item is a pack of plywood. Depending on thickness, there is certain amount of sheets in a pack and, as the result, different volume. I want to add fields like lenth, width, thickness, amount of sheets and field, that you workout what is the volume in cbm or square meters. Is it possible to arrange within Zoho Books? thank you!