Teacher Wang went to the store and bought 16 pencils and 24 pens, which cost 192.8 yuan. It is known that each pencil is 0.8 yuan, so how much is each pen?
王老师到商店里买了16支铅笔和24支钢笔，共用去192.8元．已知每支铅笔0.8元，那么每支钢笔多少元？
<gadget id="calculator">0.8 * 16</gadget>
<output>12.8</output>

<gadget id="calculator">192.8 - 12.8</gadget>
<output>180</output>

<gadget id="calculator">180 / 24</gadget>
<output>15/2 = around 7.5</output>

<result>15/2 = around 7.5</result>