Master Wang shipped 200 pieces of glass to a company, and the shipping fee for each piece was 0.6 yuan. If one piece was broken, in addition to the shipping fee, he had to pay 4 yuan in compensation. As a result, the company paid Master Wang 106.2 yuan for shipping. Question: How many pieces of glass were broken?
王师傅给一家公司运200块玻璃，每块运费0.6元，如果打破一块，除不得运费外，还需赔偿4元，结果该公司付给王师傅106.2元运费，问：打破了几块玻璃？
<gadget id="calculator">200 * 0.6</gadget>
<output>120</output>

<gadget id="calculator">120 - 106.2</gadget>
<output>13.8</output>

<gadget id="calculator">4 + 0.6</gadget>
<output>4.6</output>

<gadget id="calculator">13.8 / 4.6</gadget>
<output>3</output>

<result>3</result>