1 kilogram (3/5) weighs the same as how many kilograms (1/5).
1千克的(3/5)和多少千克的(1/5)一样重．
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

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

<gadget id="calculator">(3/5) / (1/5)</gadget>
<output>3</output>

<gadget id="calculator">1 * 3</gadget>
<output>3</output>

<result>3</result>