Xiaohong walks (3/4) km in (1/4) hour, how many kilometers per hour on average? What is the correct column
小红(1/4)小时走(3/4)km，平均每小时行几千米？正确的列式是多少
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

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

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

<result>3</result>