Price Function - Difficulty in understanding the formula

Hi
I am not able to understand the Price function in Excel.
As i tried to calculate the Price of a bond on the basis of the Formula ( manually )given in the Excel Help on function and tried to compare the result with the Price Function there appears to be some diifference in the two values.
I any one can correct me on this if my understanding of the formula is wrong.
Kindly refer to the attachments for solving and comparisions.