Learn Dutch: Ik heb de handschoen elders gevonden, en ik ben daar heel blij mee. - I found the glove elsewhere, and I am very happy with that.

In Dutch, pronominal adverbs like daarmee (meaning "with that") are very frequently split. When you have extra descriptive words like heel blij (very happy), they usually get sandwiched between the two parts. Saying ik ben daar heel blij mee sounds much more natural than keeping them together.

The translation says "with that", but the Dutch word used is mee. Isn't "with" usually met?

Yes, the standard preposition for "with" is met. However, whenever met combines with words like daar, hier, or waar to form a pronominal adverb, it always changes its shape to mee. This is why we use daar ... mee instead of daarmet.

Could I say ergens anders instead of elders for "elsewhere"?

Yes, absolutely! In fact, ergens anders (literally "somewhere else") is much more common in everyday spoken Dutch. elders is a great word to know at this level, but it sounds slightly more formal or written.

Why is gevonden pushed all the way to the end of the first part of the sentence?