I struggle with basic math so please help

I want to know how to calculate potential profit...need easy explanation as if you are teaching a little student,
Let's say in the following example scenario: I have invested $200 into an alt-coin priced at $5.50. Few months later, it reaches $12. So how do I calculate how much profit I will have made? Is this the correct calculation? Divide 200/5.50, which is 36.36. Then multiply 36.36 by 12, which is 436.32. Then subtract 436.32 minus initial investment (200). So will I have made $236.32? Is this the right way to calculate

And for what purpose do you expect profit? It is impossible to say exactly how much you will receive by investing in coins, because you do not know how much they will cost in the future! You only need to decide on the trading strategy!