What is the angle between the hour and minute hands when the face of the clock points to 6:15?
当时钟面指向6时15分时，时针和分针的夹角是多少度．
<gadget id="calculator">30 * 6</gadget>
<output>180</output>

<gadget id="calculator">30 * 3</gadget>
<output>90</output>

<gadget id="calculator">180 - 90</gadget>
<output>90</output>

<gadget id="calculator">0.5 * 15</gadget>
<output>7.5</output>

<gadget id="calculator">90 + 7.5</gadget>
<output>97.5</output>

<result>97.5</result>