How many degrees did the minute hand rotate between 3:15 and 3:45?
从3点15分到3点45分这段时间里，分针旋转了多少°
<gadget id="calculator">360 / 60</gadget>
<output>6</output>

<gadget id="calculator">45 - 15</gadget>
<output>30</output>

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

<result>180</result>