A car goes to the provincial capital, takes 6 hours to go, and 4 hours to come back. The speed when going is 64 km/h, what is the speed when returning?
一辆汽车去省城，去时用6小时，回来时用4小时，去时的速度是64千米/时，回来时的速度是多少？
<gadget id="calculator">6 / 4</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">64 * (3/2)</gadget>
<output>96</output>

<result>96</result>