Doesn't matter what I try I just can't get this one right...

The problem: If you had to repeat a certain word a few hundred times eg. bafana in a single line: bafanabafanabafanabafana...etc. What formula can be used to find out what the 513th (or any other figure)letter will be. The second part to this problem is: How did you figure the formula out?

Can anybody help me please?

Thanks