How Many Times
How Often, What Temperature
If someone asks you what occurrence or what degrees they're really trying to ask you how many times something happened. Sometimes they're asking what temperature it is too.
The reading is a combination of kun'yomi and on'yomi readings. That being said, both readings for both kanji are the readings you learned already, so you should be able to read this.
How many times?
many times over
This song is a masterpiece that I remember many times a year.
I have ordered the same thing at the same restaurant many times.
I wrote a fan letter many times, but I didn't get a reply.