What is the fractional unit of the difference of (5/8)-(1/6), and how many such fractional units are contained in the difference.
(5/8)-(1/6)的差的分数单位是多少，差里含有多少个这样的分数单位．
<gadget id="calculator">1 / 24</gadget>
<output>1/24 = around 0.041667</output>

<result>1/24 = around 0.041667</result>