The distance between A and B is 90km. Two cars, A and B, drive from A and B at the same time. Car A travels 60km per hour, and the speed of B is 4/5 of that of A. How long does it take? Two cars meet?
A、B两地相距90km，甲、乙两辆汽车同时从甲、乙两地相向开出，甲车每小时行60km，乙车的速度是甲车的(4/5)，经过多长时间两辆车相遇？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">60 * (4/5)</gadget>
<output>48</output>

<gadget id="calculator">48 + 60</gadget>
<output>108</output>

<gadget id="calculator">90 / 108</gadget>
<output>5/6 = around 0.833333</output>

<result>5/6 = around 0.833333</result>