cropin of images 80k

Hi Sorry for the last project. But the images r of the same size and has to be cropped in another same size. ------There are around 80000 [eighty thousand images] that have to be cropped into a different size. The work has to be done within 3 days starting Each image while cropping wont take much time and the work is quite easy. ONLY SERIOUS BIDDERS MIGHT APPLY