Can someone explain how I find this please?

Shepler Boot Company makes specialty boots for the rodeo circuit. On December 31, 2010, the company had 500 pairs of boots in finished goods inventory and 1,500 heels at a cost of $11 each in raw materials inventory. During 2011, the company purchased 44,000 additional heels at $11 each and manufactured 16,400 pairs of boots Determine the unit and dollar amounts of raw materials inventory in heels at December 31, 2011.(Omit the "$" sign in your response.)