For a pile of goods, big trucks transport 20 tons per day, small trucks transport 12 tons per day, and 112 tons are transported for several days, with an average of 14 tons per day. How many days did the large trucks transport?
一堆货物，大卡车每天运20吨，小卡车每天运12吨，一连几天运了112吨，平均每天运14吨，大卡车运了多少天．
<gadget id="calculator">112 / 14</gadget>
<output>8</output>

<gadget id="calculator">8 * 20</gadget>
<output>160</output>

<gadget id="calculator">160 - 112</gadget>
<output>48</output>

<gadget id="calculator">20 - 12</gadget>
<output>8</output>

<gadget id="calculator">48 / 8</gadget>
<output>6</output>

<gadget id="calculator">8 - 6</gadget>
<output>2</output>

<result>2</result>