Converting numbers to currency

I am currently trying to make a financial calculator that will calculate loan payments. However, I am having trouble converting the final product into a currency format.

I have seen that tutorial on Flashkit, but it has to be one of the hardest-to-read tutorials I have ever seen. :frowning: Has anyone tried this, and if so, do they know a good way to handle this problem? Thanks ahead of time!

What is a currency format exactly?