Teacher Li bought 12 pens, paid 60 yuan to the salesperson, and got 6 yuan back. How much is each pen? (solution with equation)
李老师买了12枝钢笔，付给营业员60元，找回6元，每支钢笔多少元？(用方程解答)
<gadget id="calculator">60 - 6</gadget>
<output>54</output>

<gadget id="calculator">54 / 12</gadget>
<output>9/2 = around 4.5</output>

<result>9/2 = around 4.5</result>