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 $ 25,400
Variable expenses 13,800


Contribution margin 11,600
Fixed expenses 7,772


Net operating income $ 3,828





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