Xiaohong (2/3) walks 4 kilometers in an hour, how many kilometers does she walk in an hour?
小红(2/3)小时走4千米，她每小时走多少千米．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">4 / (2/3)</gadget>
<output>6</output>

<result>6</result>