How much is $100 in Twitch bits?

Excuse me, I was wondering if you could clarify something for me. I'm a bit confused about the conversion rate between US dollars and Twitch bits. Specifically, I'm trying to figure out how many Twitch bits are equivalent to $100. Could you please help me understand this? I've heard that there's a set exchange rate, but I'm not entirely sure what it is. Any information you could provide would be greatly appreciated.