5 hours knitting pattern for baby sweater

Hi
I have started knitting this pattern.
As i’m a beginner,I can’t understand some points.
Row 26: You will now be placing markers to show the fronts, back, and sleeves
K7, M1, K6, M1, K6, M1, K1, place marker (23 sts for front)
K1, M1, K7, M1, K6, M1, K7, M1, K2, place marker (27 sts for sleeve)
K2, M1, (K7, M1) twice, K6, M1, (K7, M1) twice, K2, place marker (44 sts for back)
K1, M1, K7, M1, K6, M1, K7, M1, K2, place marker, (27 sts for other sleeve)
K1, M1, K6, M1, K6, M1, K7 (23 sts for other front)
Row 27: K3, P to last 3 sts, K3
Row 28: Knit across the row, increasing 1 st before and after each marker. (150 sts)
Row 29: K3, P to last 3 sts, K3
Row 30: Same as Row 28 (158 sts)
What i can’t understand is row 28,i increased 1 st before and after marker and at last i had 152 st,not 150 as it is written in the pattern. My question is that after increasing in row 28,how many st should exist and also how many st should i have for each part of front,back and sleeves? And when i want to repeat the row of 28in row 30,where should i start increasing?at last for each part how many st should i have?
Thanks and sorry for poor english i used as english is not my first language.

Welcome to KH!
Each increase row should increase the stitch count by 8sts. So since row 26 is 144 then row 28 should be 152 which is what you have. The stitch count appears to be wrong in the pattern (150). On the next increase row you increase again on each side of the marker and you should have 160 sts (25-31-48-31-25).
Your English is wonderful. Enjoy knitting the sweater.

Wow,thank you very much,your answer helped me alot and thanks alot for your compliment.
Surely i would have questions after this as i’m a beginner,i would be very thankful if you guide me.