This is the 16309th most frequent Turkish word.
yaptığıyla
"With what he/she does/did."
In this sentence, "yaptığıyla" refers to the action or contribution the subject made, employing a possessive structure (third person singular) combined with the prepositional suffix "-yla/-ile" (meaning with).
O yaptığıyla gurur duydu.
He was proud of what he did.
Here, "yaptığıyla" signifies the basis of understanding or reasoning by adding the prepositional suffix "-yla/-ile" (with) to the possessive form of the action taken by the subject.
Arkadaşları, yaptığıyla onun ne kadar yetenekli olduğunu anladı.
His friends understood how talented he was by what he did.
This use of "yaptığıyla" shows support or assistance provided via actions done, again combining the possessive form of the verb-derived structure with the prepositional suffix.