From 13:00 p.m. to 13:50 p.m. that day, what is the angle in degrees that the minute hand of the clock turns.
从下午13：00到当天下午13：50，时钟的分针转过的角度为多少度．
<gadget id="calculator">30 * 10</gadget>
<output>300</output>

<result>300</result>