After walking a certain distance, A takes 1.5 hours and B takes 2 hours, then A’s speed is faster than B’s ((())/(())).
走完一段路，甲要1.5小时，乙要2小时，则甲的速度比乙快((())/(()))．
<gadget id="calculator">1 / 1.5</gadget>
<output>0.666667</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">0.666667 - (1/2)</gadget>
<output>0.166667</output>

<gadget id="calculator">0.166667 / (1/2)</gadget>
<output>0.333334</output>

<result>0.333334</result>