A car drives from place A to place B at a speed of 36 km/h. It takes 4 hours to reach place B, and it takes 1 hour less to return to place A. What is the speed when returning?
一辆汽车从甲地开往乙地，去时的速度36千米/时，用了4小时到达乙地，返回时少用1小时回到甲地，返回时的速度是多少？
<gadget id="calculator">4 - 1</gadget>
<output>3</output>

<gadget id="calculator">4 / 3</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">36 * (4/3)</gadget>
<output>48</output>

<result>48</result>