A transportation team transported 250 celadon vases, and it was stipulated that the transportation fee would be 20 yuan for the complete one to the destination, and 100 yuan for the damaged one. How many vases were damaged in total?
某运输队运250个青瓷花瓶，规定完整运1个到目的地给运费20元，损坏1个要倒赔100元，运完这批花瓶后，运输队共得运费4400元．一共损坏了几个花瓶？
<gadget id="calculator">20 * 250</gadget>
<output>5_000</output>

<gadget id="calculator">5_000 - 4_400</gadget>
<output>600</output>

<gadget id="calculator">100 + 20</gadget>
<output>120</output>

<gadget id="calculator">600 / 120</gadget>
<output>5</output>

<result>5</result>