In a certain place, one day the ratio of daytime to nighttime is 5:7, how many hours are there in the daytime?
某地，有一天白天和夜间时间的比是5：7，这天白天有多少小时．
<gadget id="calculator">5 + 7</gadget>
<output>12</output>

<gadget id="calculator">5 / 12</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">24 * (5/12)</gadget>
<output>10</output>

<result>10</result>