At 8 o'clock, the minute hand and the hour hand form an angle of 75° for the first time.
8点多少分的时候，分针与时针第一次成75°角．
<gadget id="calculator">30 * 8</gadget>
<output>240</output>

<gadget id="calculator">240 - 75</gadget>
<output>165</output>

<gadget id="calculator">6 - 0.5</gadget>
<output>5.5</output>

<gadget id="calculator">165 / 5.5</gadget>
<output>30</output>

<result>30</result>