=IFERROR((COUNTIF([Monthly Coaching Month(s) when goals met]@row, CONTAINS("M1", @cell))
+ COUNTIF([Monthly Coaching Month(s) when goals met]@row, CONTAINS("M2", @cell))
+ COUNTIF([Monthly Coaching Month(s) when goals met]@row, CONTAINS("M3", @cell)))
/
(COUNTIF([Monthly Coaching Month(s) when goals met]@row,
OR(CONTAINS("M1 - Met", @cell),
CONTAINS("M2 - Met", @cell),
CONTAINS("M3 - Met", @cell))) * 3), "")