1 ton (2/5) is equal to how many tons (1/5).
1吨的(2/5)和多少吨的(1/5)相等．
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

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

<gadget id="calculator">(2/5) / (1/5)</gadget>
<output>2</output>

<gadget id="calculator">1 * 2</gadget>
<output>2</output>

<result>2</result>