Howell Petroleum, Incorporated, is trying to evaluate a generation project with the following cash flows:

Year Cash Flow

$0$$ $39,400,000$

$163,400,000$

$2-12,400,000$

NPV $7988429\mathrm{.}75$

This Project has two IRR's, namely $\_\_\_\_\_\_\_$ percent and $\_\_38\mathrm{.}13\_\_$ percent in order smallest to general

My Question is how to calculate the Descartes inverse of $38\mathrm{.}13\%?$ I got all the other answers.