How much is (3/5) closest to (4/9)
(4/9)的(3/5)最接近多少
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

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

<result>1/4 = around 0.25</result>