I just learned this today, it turns out that different exchanges use different units, so I often get confused. To avoid confusion, just remember: 1K is 1k, 1M is 1 million, 1E is 100 million, 1B is 1 billion. The most important one is 1T, which represents a trillion, often seen when talking about the market cap of major coins. Knowing these numbers clearly helps me avoid mixing things up when reading news or tracking prices on exchanges. If anyone still forgets, remember these to be sure.