calculator and algebraic to RPN/RPL online converter

[Eddie W. Shore]

(1+(1+I)^-N)/I converts to RPN just fine:

Code:

  @ RPN of (1+(1+I)^-N)/I
  1
  1
  I
  +
  N
  NEG
  ^
  +
  I
  /

  @ EVALUATION

DUP
EVAL

However, with the Evaluate gives an answer of 1+2/I . I have not assigned any values to any variables.