On a map with a scale of 1:5000000, the distance between the two places is 12 centimeters. Two cars, A and B, drive from the two places at the same time. It is known that the speed of car A is 90 kilometers per hour, and the speed of car B is Car A's (2/3), how many hours will the two cars meet?
在比例尺是1：5000000的地图上，量得两地的距离是12厘米，甲、乙两辆汽车同时从两地相对开出，已知甲车速度每小时90千米，乙车的速度是甲车的(2/3)，两车几小时相遇？
<gadget id="calculator">1 / 5_000_000</gadget>
<output>1/5_000_000 = around 0</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">90 * (2/3)</gadget>
<output>60</output>

<gadget id="calculator">90 + 60</gadget>
<output>150</output>

<gadget id="calculator">12 / (1/5_000_000) / 100_000 / 150</gadget>
<output>4</output>

<result>4</result>