What is the angle between the minute hand and the hour hand when the clock is at 12:20?
当时钟在12点20分时，分针与时针的夹角是多少°．
<gadget id="calculator">4 * 30</gadget>
<output>120</output>

<gadget id="calculator">0.5 * 20</gadget>
<output>10</output>

<gadget id="calculator">120 - 10</gadget>
<output>110</output>

<result>110</result>