CSV download becomes formula

Hi  

My users wants 3 numbers to be within a cell in their download. 

The numbers are separated by a new line and are stored as 3 separate measure fields. 

For example,  

123  (from field 1) 

456  (from field 2) 

789  (from field 3) 

To achieve that I did something like this 

str([Field1]) + "  

  " + str([Field2]) + " 

  " + str([Field3]) 

It looks all good on the front end but when user downloads it to csv some of cells becomes a formula in the download and the numbers are not showing up correctly.  

I searched online and the AI suggested putting a prefix ' in the formula but it looks bad on the front end. 

Anyway around this without impacting the front end  ? 

Thank you