Raw Material Loss due to Bandsaw Cutting

Hi
I have a situation
I buy Material in Lengths (1 Length is 3660 mm)
I send out these material to Subcontract for Cutting to size
For Example
I buy a Length of Dia 40 mm Rod ( Dia 40 x 3660 mm Length)
The Sub-contract has to cut this in to 57mm length
The Sawing Blade used to cut this material is 3 mm thick
So
57 + 3 mm = 60mm
3660 / 60 = 61 pieces of 57mm length material
Here
How to count for the 3mm Loss of material (the Blade thickness of the saw)
Thanks and Regards
Hemanth