Lianhua Supermarket entrusts Master Zhang to deliver 400 porcelain bowls, and the shipping fee for each porcelain bowl is 0.2 yuan. If every porcelain bowl is broken, not only will the shipping fee not be paid, but also 2 yuan will be compensated. At the end of the bill, Master Li got a total of 58 yuan for shipping. He asked how many porcelain bowls were damaged by Master Li during the transportation?
联华超市委托张师傅运送400只瓷碗，每只瓷碗运费0.2元．如果每破1只瓷碗，不但不给运费，还要赔偿2元．最后结账，李师傅共得运费58元，问李师傅在运送过程中破损了几只瓷碗？
<gadget id="calculator">400 * 0.2</gadget>
<output>80</output>

<gadget id="calculator">80 - 58</gadget>
<output>22</output>

<gadget id="calculator">0.2 + 2</gadget>
<output>2.2</output>

<gadget id="calculator">22 / 2.2</gadget>
<output>10</output>

<result>10</result>