The mother squirrel picks pine cones, 20 per day on sunny days and only 14 per day on rainy days. It picked 112 pine cones for several days, an average of 14 per day. How many rainy days have there been in these days?
松鼠妈妈采松果，晴天每天可以采20个，雨天每天只能采14个．它一连几天采了112个松果，平均每天采14个．问这几天中有几个雨天？
<gadget id="calculator">112 / 14</gadget>
<output>8</output>

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

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

<gadget id="calculator">20 - 14</gadget>
<output>6</output>

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

<result>8</result>