Comparing (7/15) with (2/5), how many fractional units are larger.
(7/15)和(2/5)比较，多少的分数单位大．
<gadget id="calculator">5 / 1</gadget>
<output>5</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<result>2/5 = around 0.4</result>