Uncle workers transported vases, stipulating that they would charge 20 yuan for a complete one to the destination, and pay 100 yuan for damaged ones. Uncle Wang transported 250 vases for a total of 4400 yuan. He damaged several vases.
工人叔叔运花瓶，规定完整运到目的地一个收费20元，损坏一个不仅不收运费还要赔100元．王叔叔运250个，共得4400元，他损坏了几个花瓶．
<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>