At 4:20 on the clock, what is the acute angle between the hour and minute hands?
时钟4点20分，时针和分针所夹的锐角的度数是多少．
<gadget id="calculator">360 / 12</gadget>
<output>30</output>

<gadget id="calculator">20 / 60</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">30 * (1/3)</gadget>
<output>10</output>

<result>10</result>