Uncle Wang set off from the county seat to Wangzhuang Township to deliver fertilizers. The speed to go is 40 km/h, and it took 3 hours to go there. It took 2 hours to return. How many kilometers per hour did you travel on average when returning the same way?
汪叔叔从县城出发去王庄乡送化肥．去的速度是40千米/时，去的时候用了3小时．返回时用了2小时．原路返回时平均每小时行多少千米？
<gadget id="calculator">3 / 2</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">40 * (3/2)</gadget>
<output>60</output>

<result>60</result>