30 meters (1/3), exactly how much is 40 meters.
30米的(1/3)，刚好是40米的多少．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(1/3) / 40</gadget>
<output>1/120 = around 0.008333</output>

<gadget id="calculator">30 * (1/120)</gadget>
<output>1/4 = around 0.25</output>

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