It looks like you're making a bobble. All these st go into one st., so you k1 as normal, but DON'T slide it off. Put your yarn in the front of the work, as if you were going to purl, k1 again and don't slide it off. yo and k1 again and THEN slide off the whole lot. So you're going from one st to 5 in on spot. On the next row (or three) they're probably going to tell you to purl all those st together
The brackets give you a st sequence and the number outside of it tells you how many times to repeat that sequence.