OK, long time no see, but I've really got a problem this time.

I have been given a word document, it has five different sections in it (raffle tickets). Each section is divided into two side-by-side sections. I was asked to figure out exactly how to number these tickets, from 1 to 2000, with identical numbers on each side of the ticket. Does this make sense?

I have absolutely no idea where to even start... Please help!