In August of a certain year, there are 6 fewer rainy days than sunny days, and 2 fewer cloudy days than sunny days. How many days are there sunny days in this month?
某年的8月份中，雨天比晴天少6天，阴天比晴天少2天，这个月晴天有多少天？
<gadget id="calculator">6 + 2 + 31</gadget>
<output>39</output>

<gadget id="calculator">1 + 1 + 1</gadget>
<output>3</output>

<gadget id="calculator">39 / 3</gadget>
<output>13</output>

<result>13</result>