How do I add up all the rotations of a Tranform list ?

I have a list of transform and I want to add up these Vector3 eulerAngles/ rotation values at runtime .
so I tried the following method and quickly realised that it made no sense and that I don’t know at to do here .

public List Targets = new List();

void Updaye()
{
        for(int i = 0; i < Targets.Count; i++)
        {
             transform.eulerAngles += Targets*.transform.eulerAngles;*

}

}
Surprisingly I have not found any sililar questons online . maybe it was too easy to do ? (’ ._.)

You can multiply Quaternions to combine them :

void Update()
{
    Quaternion quat = Quaternion.identity;
    for (int i = 0; i < Targets.Count; ++i)
        quat *= Targets*.rotation;*

//quat is your combined rotation.
}