When the time is 6:20, what is the angle between the hour and minute hands on the clock face?
当时间为6点20时，钟面上时针与分针的夹角为多少度．
<gadget id="calculator">30 * 2</gadget>
<output>60</output>

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

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

<gadget id="calculator">60 + 10</gadget>
<output>70</output>

<result>70</result>