Because of carelessness, Xiao Li, a salesperson, mistakenly sells a pen with a unit price of 3.2 as 2.3 yuan, and sells a total of 22 pens. As a result, how much does Xiao Li have to pay in compensation?
售货员小李由于粗心大意，误把单价为3.2的钢笔当作2.3元出售，一共卖出22支，结果小李要赔款多少元．
<gadget id="calculator">3.2 - 2.3</gadget>
<output>0.9</output>

<gadget id="calculator">0.9 * 22</gadget>
<output>19.8</output>

<result>19.8</result>