The little rabbit mother picks mushrooms. She picks an average of 20 mushrooms per day in sunny days and 12 mushrooms in rainy days. She has picked a total of 112 mushrooms for 8 consecutive days. How many days are sunny days?
小兔妈妈采蘑菇，晴天平均每天采20个，雨天平均每天采12个，她连续8天共采了112个，这几天中有几天是晴天？
<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>