I don't count rows for something like this, I use the tape measure. That's why it's given in inches, not rows. Just work the plain sts 2 more inches than is given, then do the eyelet rows. It says "Work back & forth on these left sleeve sts only until length from point if division is 3 (4, 4½)”, ending with a WS row. Work 3 pattern repeats as follows:" That's where you add length to the sleeves, not at the end in the eyelet pattern.
sue- knitting heretic