Piecework Form - Calculate Pay Rate And Average

This is the current incarnation of what I have:
'Program: Ch4E4.6
'Programmer: Jeff Pannell
'Date: October 1, 2009
'Description: This will allow for entry of a worker's name and the number of pieces completed. The program will then calculate a pay rate, but also determine an average and summarize number of pieces made, total pay and an average pay per person.

Public Class PieceworkForm
'Declaration of modular-level constants.
Const PIECE_RATEA_Decimal As Decimal = 0.5D
Const PIECE_RATEB_Decimal As Decimal = 0.55D
Const PIECE_RATEC_Decimal As Decimal = 0.6D
[Code] .....

So, my problem is that whenever the form is executed..a user would type in a worker name, and the amount of pieces made. I get a dollar amount earned and then a total pay, though they seem to be the same. More than likely I've got some sort of bad logic in there mathematically.