At 5:40 on the clock face, what is the minimum angle formed by the hour hand and the minute hand?
钟面上5：40时，时针与分针组成的角最小是多少度．
<gadget id="calculator">60 - 40</gadget>
<output>20</output>

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

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

<gadget id="calculator">30 * 2</gadget>
<output>60</output>

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

<result>70</result>