On the clock face, the minute hand moves from "12" to "4", what is the angle formed by it?
钟面上，分针从"12"走到"4"，形成的角是多少°
<gadget id="calculator">360 / 12</gadget>
<output>30</output>

<gadget id="calculator">30 * 4</gadget>
<output>120</output>

<result>120</result>