I'm trying to create a tally of the number of rows where a specific column contains a string. For example, the contents of a cell = "6-1, 6-2, 7-2" and I want this to be counted as 6-1, as 6-2, and also as 7-2. If this row were to only have one designation, so cell = "6-1", I could do this easily with COUNTIF. But although I can filter my rows by whether this cell contains "6-1", I can't figure out how to specify in a formula that it is allowed to contain "6-1" and not just equal "6-1".
Also, I have a couple hundred of these designations, so I can't just have a checkbox column for 6-1, column for 6-2, and column for 7-2.
Any ideas? Thanks!!