Standahl Air uses two measures of activity, flights and passengers, in the cost formulas in its budgets and performance reports. The cost formula for plane operating costs is $40,190 per month plus $2709 per flight plus $10 per passenger. The company expected its activity in August to be 88 flights and 300 passengers, but the actual activity was 91 flights and 303 passengers. The actual cost for plane operating costs in August was $258,690. The plane operating costs in the planning budget for August would be closest to: