A section of rail, (3/5) m weighs (1/20) tons, what is the average weight of the rail per meter?
一段钢轨，(3/5)m重(1/20)吨，平均每米钢轨重多少吨
<gadget id="calculator">1 / 20</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">(1/20) / (3/5)</gadget>
<output>1/12 = around 0.083333</output>

<result>1/12 = around 0.083333</result>