Lele Department Store entrusted the moving station to deliver 500 vases. The two parties agreed on a shipping fee of 0.24 yuan per vase. However, if any damage occurred, the shipping fee would not be paid for each broken vase, and a compensation of 1.26 yuan would be required. As a result, the moving station received a total shipping fee of 115.5 yuan. ． Question: How many vases were broken during the transportation?
乐乐百货商店委托搬运站运送500只花瓶，双方商定每只运费0.24元，但如果发生损坏，那么每打破一只不仅不给运费，而且还要赔偿1.26元，结果搬运站共得运费115.5元．问：搬运过程中共打破了几只花瓶？
<gadget id="calculator">500 * 0.24</gadget>
<output>120</output>

<gadget id="calculator">120 - 115.5</gadget>
<output>4.5</output>

<gadget id="calculator">1.26 + 0.24</gadget>
<output>1.5</output>

<gadget id="calculator">4.5 / 1.5</gadget>
<output>3</output>

<result>3</result>