The incentive scheme of John Rey's factory workers features a combined piece rate $11.25 and a minimum wage guaranteed wage of $875 per week show.

Employee J - 67 units produced

Employee O - 78 units produced

Employee H - 80 units produced

Employee N - 82 units produced

Employee R - 72 units produced

Employee E - 75 units produced

What amount of the portion of the weekly payroll must- be charged to factory overhead?