Both the minute hand and the hour hand on the clock face start to rotate from "12", when the minute hand rotates three times, how many degrees does the hour hand rotate
钟面上分针和时针都从"12"开始旋转，当分针旋转了三圈时，时针旋转了多少°
<gadget id="calculator">360 / 60</gadget>
<output>6</output>

<gadget id="calculator">15 * 6</gadget>
<output>90</output>

<result>90</result>