I have a column of case numbers. The numbers can be made up of a number only, for example, 832, or a number with a slash and a number after it, for example, 832/1. I need to create a function that searches for all the numbers that do not have a slash and adds a slash and the digit 0 to them. For example, case number 832 will become 832/0. In Excel, this can be done with the function IF(ISNUMBER(SEARCH), but this is not supported in Airtable. Do you have a suggestion on how to do this?