The transportation company transported 200 pieces of glass, and the shipping fee was 0.6 yuan for each piece of glass. If a piece of glass was broken, in addition to the shipping fee, a compensation of 4 yuan was required. As a result, the shipping cost was 106.2 yuan. How many pieces of glass were broken?
运输公司运玻璃200块，每运一块得运费0.6元，如果打破一块除不得运费外，还需要赔偿4元．结果运完得运费106.2元，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>