From 3:00 p.m. to 8:00 p.m., how many degrees did the hour hand move on the clock face?
下午3时到晚上8时，钟面上时针一共走了多少度．
<gadget id="calculator">8 - 3</gadget>
<output>5</output>

<gadget id="calculator">5 * 30</gadget>
<output>150</output>

<result>150</result>