At 6:45 on the clock face, what is the smallest angle formed by the hour and minute hands?
钟面上6点45分，时针和分针所成的最小角度是多少．
<gadget id="calculator">360 / 60</gadget>
<output>6</output>

<gadget id="calculator">60 / 5</gadget>
<output>12</output>

<gadget id="calculator">45 / 12</gadget>
<output>15/4 = around 3.75</output>

<gadget id="calculator">15 - (15/4)</gadget>
<output>45/4 = around 11.25</output>

<gadget id="calculator">6 * (45/4)</gadget>
<output>135/2 = around 67.5</output>

<result>135/2 = around 67.5</result>