I'm working on an app that has to do with cryptocurrencies and there are times where I'm showing prices for very small amounts of almost worthless cryptocurrencies. For example, I'm showing the price for 0.002 GDB, which right now would be worth about $0.000040236. My problem is though, that currently the app simply shows $0.00, but to a user that doesn't make sense, because it's not actually $0.00. It's just really close to $0.00. So, my question is how I should actually show it? I've thought about maybe doing something like ≈$0.00. Or maybe just ∼$0.00. I don't have the option to show the whole amount, because the space it fits in is kind of small. What's the best way to represent it?
EDIT 1: So, in response to a request about more information, we're a company that generates tax forms and does other tax calculations. This is in a breakdown of cost basis line items. So, they're probably expecting accuracy, but I don't know how many will actually want to drill down and check all our calculations, if that makes sense.