Park company manufactrues high technology testing instruments. The instruments are complex and not many units of any particular model are sold. The last unit of model MF-59 sold was the eight off of the assembly line. The labor cost for that unit was 2456.50 and required 614125 hours of labor. The fourth unit, produced last month required 72.25 hours of labor. Assuming that learning has been consistent for this product, how many hours did it take to produce the first unit