In June this year in our district, sunny days are less than rainy days (3/5), cloudy days are less than rainy days (2/5), how many days are rainy days in this month.
我区今年六月份中，晴天比雨天少(3/5)，阴天比雨天少(2/5)，这个月份有多少天是雨天．
<gadget id="calculator">2 + 3 + 5</gadget>
<output>10</output>

<gadget id="calculator">5 / 10</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">30 * (1/2)</gadget>
<output>15</output>

<result>15</result>