Given the infix: ( 2 + 3 * 5 - ( 2 * 6 ^ 2 ) * 4 + ( ( 3 + 2 ) * 5 ) - 6 ) / 1

Could anyone check whether or not the following is the correct postfix?

2 3 5 * 2 6 2 ^ * 4 * 3 2 + 5 * + 6 - - + 1 /

In my testing phase that's what my program converted the infix to, and that's the same thing I got by hand, however evaluating the infix expression, both by hand and computer I get -252, yet both by computer and by hand I get -290 for the postfix expression. If someone could tell me whether or not I converted to postfix correctly I would greatly appreciate it, as it would help me isolate whether my evaluation method is incorrect or whether my conversion method is incorrect.