A car delivers goods from place A to place B. It takes 6 hours to travel 44 km per hour when going there, and 5.5 hours to return. How many kilometers per hour does the car travel when it returns?
一辆汽车从甲地往乙地送货，去时每小时行驶44km，用了6小时，回来时用5.5h，这辆汽车回来时每小时行多少千米？
<gadget id="calculator">6 / 5.5</gadget>
<output>1.090909</output>

<gadget id="calculator">44 * 1.090909</gadget>
<output>47.999996</output>

<result>47.999996</result>