How many degrees does the hour hand rotate clockwise from 2 o'clock to 5 o'clock?
钟面上的时针从2时走到5时，时针顺时针旋转多少度．
<gadget id="calculator">360 / 12</gadget>
<output>30</output>

<gadget id="calculator">3 * 30</gadget>
<output>90</output>

<result>90</result>