If a is a natural number (except 0 and 1), the largest of the following formulas is a/how much
如果a是自然数(0和1除外)，下列算式最大的是a/多少
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

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