A rail is (4/5) meters long and weighs (1/25) tons. What is the length of 1 ton of this rail? Which of the following is correct
一种钢轨长(4/5)米，重(1/25)吨．求这种钢轨1吨长多少米？下面列式正确的是多少
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 / 25</gadget>
<output>1/25 = around 0.04</output>

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

<result>20</result>