Master Wang drove from the county seat and delivered fertilizers to Zhang Village at a speed of 60 km/h. It took 5 hours to go and 4 hours to return. What is the speed of return?
王师傅开车从县城出发，以60千米/小时的速度向张村送化肥．去时用了5小时，返回时用了4小时，返回时的速度是多少？
<gadget id="calculator">5 / 4</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">60 * (5/4)</gadget>
<output>75</output>

<result>75</result>