Liu Jun transported 2,000 glasses to a certain city, and the shipping fee was 0.1 yuan for each glass. If one glass was damaged, not only would he not be able to get the shipping fee, but he would also have to pay 0.4 yuan in compensation. In the end, Liu Jun got a total of 198 yuan for shipping. Do you know how many glasses were broken?
刘军向某市运送2000只玻璃杯，每只运费0.1元，若损坏1只，不但得不到运费，还要赔偿0.4元．刘军最后共得到运费198元．你知道损坏了几只玻璃杯吗？
<gadget id="calculator">2_000 * 0.1</gadget>
<output>200</output>

<gadget id="calculator">200 - 198</gadget>
<output>2</output>

<gadget id="calculator">0.1 + 0.4</gadget>
<output>0.5</output>

<gadget id="calculator">2 / 0.5</gadget>
<output>4</output>

<result>4</result>