A, B, and C have to go from point A to point B. A has a motorcycle that can only carry one person at a time. A can travel 36 kilometers per hour, and B and C can walk at a speed of 4 kilometers per hour. , It is known that the distance between A and B is 36 kilometers. What is the shortest time for three people to arrive at the same time?
甲、乙、丙三人都要从A地到B地去，甲有一辆摩托车每次只能带一人，甲每小时可以行36千米，乙、丙步行的速度为每小时4千米，已知A、B两地相距36千米．求三人同时到达的最短时间为多少小时？
<gadget id="calculator">14 / 5</gadget>
<output>14/5 = around 2.8</output>

<gadget id="calculator">16 / 5</gadget>
<output>16/5 = around 3.2</output>

<gadget id="calculator">36 + (16/5) + 4</gadget>
<output>216/5 = around 43.2</output>

<gadget id="calculator">36 / (216/5)</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">(14/5) * (5/6)</gadget>
<output>7/3 = around 2.333333</output>

<result>7/3 = around 2.333333</result>