(1/3)x/5=(1/3).
(1/3)x/5=(1/3)．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/3) * (1/5)</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">(1/3) / (1/15)</gadget>
<output>5</output>

<result>5</result>