A car drives from Dongcheng to Xicheng, travels 48 kilometers per hour, and arrives in Xicheng in 5 hours; it takes 4 hours to return, how many kilometers per hour on average? (Solve with ratio)
一辆汽车从东城开往西城，每小时行48千米，5小时到达西城；返回时用了4小时，平均每小时行多少千米？(用比例解)
<gadget id="calculator">48 * 5</gadget>
<output>240</output>

<gadget id="calculator">240 / 4</gadget>
<output>60</output>

<result>60</result>