A piece of steel is (4/5) meters long and weighs (1/25) tons. What is the weight of this steel in tons per meter?
一种钢材长(4/5)米，重(1/25)吨，这种钢材每米重多少吨．
<gadget id="calculator">1 / 25</gadget>
<output>1/25 = around 0.04</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">(1/25) / (4/5)</gadget>
<output>1/20 = around 0.05</output>

<result>1/20 = around 0.05</result>