He meant ""Ben bir yedinci çocuğum." olur.". "Olur" does not included in the given sentence.
The infinitive form of olur is "olmak", which means "to be". I am not sure about it's English equivalence but you can consider olur as "that would be".
For example; "Bu çok güzel olur." → "That would be very nice.".
Please forgive me for correcting two minor English grammar errors. Your explanation is perfect.
"Olur" does not included in the given sentence.
--> "Olur" is not included in the given sentence.
I am not sure about it's English equivalence...
It's --> "it is."
---> I am not sure about its English equivalent.
The dog wags its tail. Correct.
The dog wags it's tail. Incorrect.
Beni affet, çünkü düzeltim iki küçük İngilizce gramer hatayı verdiğin cevapdan.
^ & lingot.