Wabash Company has the following information pertaining to its Stone Division for this year:
- Stones
- Fixed manufacturing expenses: $100,000
- Fixed selling and administrative expenses: $70,000
- Sales: $400,000
- Direct manufacturing costs (variable): $100,000
- Variable selling and administrative expenses: $90,000
- Common expenses for the year are $24,000.
Calculate the Stone Division's contribution margin.