A person (3/4) travels 3 km in an hour, how long does it take for this person to travel 1 km? what is the formula
一个人(3/4)小时行3km，求这个人行1km所需多少时间？算式是多少
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(3/4) / 3</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>