If a is a natural number not equal to 0, among the following four formulas, which one has the largest number a/how many
如果a是不为0的自然数，下面四个算式中，哪一个得数最大a/多少
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<result>4/5 = around 0.8</result>