The time on the clock face is 1:20, what is the angle formed by the minute hand and the hour hand at this time?
钟面上的时刻是1：20，这时分针和时针形成的夹角是多少度．
<gadget id="calculator">20 / 1</gadget>
<output>20</output>

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

<gadget id="calculator">120 - 30 - 10</gadget>
<output>80</output>

<result>80</result>