Help converting program from HP12c to HP30b

[FabioBrasil]

Hi
I am unable to pass the interest rate program I had on the HP12c and I would like to switch to the HP30b

On HP12c:

f P/R
f PRGM
1
RCL i
%
+
x><y
RCL n
/
y^x
1
-
EEX
2
*
G GTO 00
f P/R

I enter the rate (i), the period I have (n), the period I want to get the rate, R / S and it calculates the equivalent rate.

Could you help me move this program to HP30b?
Thanks!