A truck transports goods from A to B, travels 60km per hour, and arrives in (6/5) hours. It takes (9/10) hours to return by the original road. What is the speed of this truck when it returns?
一辆货车从甲地运货到乙地，每小时行60km，(6/5)小时到达，原路返回时用了(9/10)小时，这辆货车返回时的速度是多少？
<gadget id="calculator">6 / 5</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">9 / 10</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">(6/5) / (9/10)</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">60 * (4/3)</gadget>
<output>80</output>

<result>80</result>