There is a truck transporting 2,000 glass bottles. The shipping fee is calculated based on the number of intact bottles when they arrive. Each bottle is 2 cents. If there is any damage, a compensation of 1 yuan will be made for each damaged bottle. The result is that the shipping fee is 379.6 yuan. Ask about the glass being transported this time How many were damaged?
有一辆货车运输2000只玻璃瓶，运费按到达时完好瓶子数目计算，每只2角，如有破损，破损1个瓶子还要倒赔1元，结果得到运费379.6元，问这次搬运中玻璃损坏了几只？
<gadget id="calculator">0.2 * 2_000</gadget>
<output>400</output>

<gadget id="calculator">400 - 379.6</gadget>
<output>20.4</output>

<gadget id="calculator">1 + 0.2</gadget>
<output>1.2</output>

<gadget id="calculator">20.4 / 1.2</gadget>
<output>17</output>

<result>17</result>