When the clock is at 12:20, what is the angle between the minute hand and the hour hand?
时钟在12时20分时，分针与时针之间的夹角度数是多少．
<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>