In (12/7), (9/4), (35/9), what is the largest fraction of the fraction unit
在(12/7)、(9/4)、(35/9)中，分数单位最大的分数是多少
<gadget id="calculator">9 / 1</gadget>
<output>9</output>

<gadget id="calculator">4 / 1</gadget>
<output>4</output>

<gadget id="calculator">9 / 4</gadget>
<output>9/4 = around 2.25</output>

<result>9/4 = around 2.25</result>