How many degrees does the hour hand of the clock travel from 3 o'clock to 5 o'clock?
钟表上的时针从3时走到5时，走过了多少度的角．
<gadget id="calculator">360 / 12</gadget>
<output>30</output>

<gadget id="calculator">5 - 3</gadget>
<output>2</output>

<gadget id="calculator">30 * 2</gadget>
<output>60</output>

<result>60</result>