IRR Using BA II PLUS

Currently studying through the NPV and IRR readings and trying to figure out how to input values.

The book make it seem so simple to add the values in, but having some trouble understanding what to press to express the equation.

As an example, what input steps should I be taking to solve something like below?

NPV = -500 + 300 [1-(1+IRR)-5]/IRR = 0

I really appreciate any help in advance.

I interpret your equation as -500 at time 0 and 5 annual cash flows of +300.

Cf0 =-500 c01=300 f01=5 2nd quit irr cpt 52.79562%

Thank you very much, i understand now!