Use the appropriate information from the data provided below to calculate operating income for the year ended December 31, 2015.

Research & Development expense $300,000

Inventory $1,000,000

Selling Expense $250,000

Accounts Receivable $400,000

Interest Expense $100,000

Accounts Payable $300,000

Cost of Goods Sold $600,000

Sales $1,200,000

Net Cash provided by Operations $250,000