During the period from 1:20 to 2:10, how many degrees did the minute hand rotate?
在1：20-2：10这段时间里，分针旋转了多少°．
<gadget id="calculator">360 / 60</gadget>
<output>6</output>

<gadget id="calculator">6 * 50</gadget>
<output>300</output>

<result>300</result>