store entrusts a portering station to deliver 400 vases. The shipping fee for each vase is 1.2 yuan. If one is damaged, 10.8 yuan will be deducted. At the end of the checkout, the transportation station received a total of 456 yuan for transportation. How many vases were damaged during the transportation?
某商店委托搬运站运送400个花瓶．每个花瓶运费是1.2元，如果破损一个，倒扣10.8元．最后结账，搬运站共得到运费456元，问搬运中破损几个花瓶？
<gadget id="calculator">1.2 * 400</gadget>
<output>480</output>

<gadget id="calculator">480 - 456</gadget>
<output>24</output>

<gadget id="calculator">1.2 + 10.8</gadget>
<output>12</output>

<gadget id="calculator">24 / 12</gadget>
<output>2</output>

<result>2</result>