11. A store makes a profit of 9 yuan from selling one fountain pen, and the purchase price of a small teddy bear toy is 2 yuan. Once, the merchant adopted a bundled promotion of "buy 4 fountain pens and get a small teddy bear toy for free", and made a total profit of 1922 yuan. How many fountain pens were sold at most in this promotion?
Analysis: To maximize the sales of pens in this promotion, it is required to sell as many as possible in packs.
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1922 \div(4 \times 9-2)=56 \cdots 18 ; 18 \div 9=2 ; \quad 56 \times 4+2=226 \text { . }
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