A fraction is approximated twice with 2 and once with 8, and (2/3) is obtained. What is the original fraction?
一个分数用2约了两次，用8约了一次，得到(2/3)，原来这个分数是多少？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<result>2/3 = around 0.666667</result>