At 8:30, what is the acute angle formed by the hour hand and the minute hand?
8点30分，时针和分针构成锐角是多少度．
<gadget id="calculator">360 / 60</gadget>
<output>6</output>

<gadget id="calculator">10 + 2.5</gadget>
<output>12.5</output>

<gadget id="calculator">6 * 12.5</gadget>
<output>75</output>

<result>75</result>