Xiaoli travels in (3/4) KM on (3/8), how many KM does she travel on (2/5).
小丽(3/8)时行(3/4)KM，(2/5)时行多少KM．
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">(3/4) / (3/8)</gadget>
<output>2</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">2 * (2/5)</gadget>
<output>4/5 = around 0.8</output>

<result>4/5 = around 0.8</result>