How many degrees does the hour hand rotate clockwise from 12 o'clock to 5 o'clock.
钟面上的时针从12点顺时针旋转多少°到5时．
<gadget id="calculator">360 / 12</gadget>
<output>30</output>

<gadget id="calculator">5 * 30</gadget>
<output>150</output>

<result>150</result>