great! Ok...now comes the fun stuff and I really need you to pay attention. (I'm going to post a link for you to read up on in a bit after this to practice whip mechanics on your own)
So, take a look at these screenshots:
First, look at the production bar in the top center of the city screen. My mouse course is hovered over it - you can't see the cursor- but you can see the text showing that you have 21 total production in a 100H setter:
Now, look at the same screen. Now I'm hovered over the numbers to the left of the production bar thought shows "base" and total production of the city currenlty:
As you can see, your city is currently producing 21H per turn into settler production as a combination of food and production tiles worked.
I must ask, you do know that workers and settlers are built with both food and hammers, right? Just making sure.
I want you to confirm that you have reviewed the above information and understand it, or otherwise let me know if you have any questions before proceeding to the next point I want to discuss