Stitch number confusion
Hi beginning knitter here! I have been trying to start a baby hat project but am confused on the way that the pattern begins. It says to cast on 90 sts (18 sts x 5 repeats per round). In the first round, there is a p3tog and two yo's which I understand cancel each other out. What I am confused about is how the p3tog will affect the number of sts in each round (making it 20 instead of 18). Is it okay for my first round to use more than the 90 co sts? Or am I missing something?