| 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 | |
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| Contribution margin | 11,600 | |
| Fixed expenses | 7,772 | |
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| Net operating income | $ | 3,828 |
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| Required: |
| If sales increase to 1,001 units, what would be the increase in net operating income? |