On the clock face, how many degrees does the hour hand rotate from 3 o'clock to 9 o'clock?
钟面上，时针从3时走到9时，旋转的度数是多少°
<gadget id="calculator">360 / 60</gadget>
<output>6</output>

<gadget id="calculator">9 - 3</gadget>
<output>6</output>

<gadget id="calculator">6 * 5</gadget>
<output>30</output>

<gadget id="calculator">6 * 30</gadget>
<output>180</output>

<result>180</result>