Oslo Company prepared the following contribution format income statement based on a sales volume of 1,000 units (the relevant range of production is 500 units to 1,500 units):

Sales $ 20,900

Variable expenses 12,300

Contribution margin 8,600

Fixed expenses 6,708

Net operating income $ 1,892

If sales increase to 1,001 units, what would be the increase in net operating income?