A private airline uses flights and passengers in its cost formulas. The cost formula for plane operating costs is $39,590 per month, plus $2,649 per flight, plus $4 per passenger. The company expected 82 flights and 294 passengers for the month, but actual activity was 85 flights and 297 passengers. The actual cost for plane operating costs in August was $255,690. The plane operating costs in the planning budget for the month is