A transport team transports 500 boxes of thermos bottles for a store, with 6 thermos bottles in each box. It is known that the shipping fee for every 10 thermos bottles is 5.5 yuan, and if one thermos bottle is damaged, the compensation cost is 11.5 yuan (of course the shipping fee for this thermos bottle cannot be obtained). As a result, the transportation team got a total of 1553.6 yuan. How many thermos bottles were damaged?
某运输队为商店运输暖瓶500箱，每箱6个暖瓶．已知每10个暖瓶的运费为5.5元，损坏一个暖瓶，要赔偿成本11.5元(这只暖瓶的运费当然得不到)，结果运输队共得到1553.6元．共损坏了多少只暖瓶．
<gadget id="calculator">500 * 6</gadget>
<output>3_000</output>

<gadget id="calculator">5.5 / 10</gadget>
<output>0.55</output>

<gadget id="calculator">3_000 * 0.55</gadget>
<output>1_650</output>

<gadget id="calculator">1_650 - 1_553.6</gadget>
<output>96.4</output>

<gadget id="calculator">11.5 + 0.55</gadget>
<output>12.05</output>

<gadget id="calculator">96.4 / 12.05</gadget>
<output>8</output>

<result>8</result>