Answer:
2.1666666666666666666666666666667
However, that is a very long answer, usually not used often.
if you are in middle school 5-7th grade. It's usually fine to write 2R1
You can write this answer:
"6 goes into 13 two remainder one times."
If you are not allowed to do remainders, write this:
"6 goes into 13 2.16666 repeatedly."