Insert a line break (CHAR(10)) after every 42 characters

Hi All,

I need a formula to insert a line break after every 42 characters in a cell , example if there is 266 characters in a cell there should be 6(266/42)line breaks.

=REPLACE(REPLACE(A1,42,0,CHAR(10)),84,0,CHAR(10))

I tried this but i am not sure how to get the start num to change to 126,168 and so on

Any help is highly appreciated

Thanks