Survey - Count the answers.

You can separate the multiple answers out into separate columns using the Split Column tile in Magic ETL. You would need to use multiple tiles to account for the maximum number of answers that a person might have selected. Once they are all separated, I would recommend adding an Unpivot tile so that you have a single column called answer and if a person had selected 3 colors, it would result in 3 rows, one for each answer. It is then very easy to count the results.

You could do a case statement to look for each color in the string, but I think you will need to create a beast mode for each color. For example, the red beast mode would look like this

(CASE when `String` LIKE '%Red%' THEN 1 ELSE 0  END)

Blue would look like this

(CASE when `String` LIKE '%Blue%' THEN 1 ELSE 0  END)

You can then put each of these beast modes into your card and sum them each to get the total counts.