The transport station transports 100 vases. It is stipulated that the shipping fee for each piece is 1 yuan. If it is damaged, not only will the shipping fee not be paid for each broken piece, but also 1 yuan will be compensated. As a result, the transportation station has a total shipping fee of 92 yuan. How many vases were broken during the transportation?
搬运站运送100只花瓶．规定每只运费1元，如果损坏，每打破一只不仅不给运费，而且还要赔偿1元，结果搬运站共得运费92元．搬运过程中共打破了多少只花瓶．
<gadget id="calculator">100 * 1</gadget>
<output>100</output>

<gadget id="calculator">100 - 92</gadget>
<output>8</output>

<gadget id="calculator">1 + 1</gadget>
<output>2</output>

<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<result>4</result>