The initial cost of a new automated conveyor system is $64,000. However, once it is installed, there will be less labor required, which will lead to a certain amount of savings annually. To maintain the conveyors, it costs $3,000 annually. The salvage value of the conveyor system is expected to be $5,000 at the end of 8 years. Assume that the direct labor rate is $15/hr. Given an interest rate of 9% per year, how many direct labor hours does the automated conveyer system need to save annually in order to break-even on the new system?