Students from Class 1, Class 6, and Class 2, Grade 6 went to Lianghe Village Park for a spring outing, but there was only one school bus to pick them up. When the students in class one leave the school by car, the students in class two start to walk; when the car arrives at a certain place on the way, the students in class one get off and walk, the car immediately returns to pick up the students in class two, and drives directly to the park. The walking speed of the students in the two classes is 5 kilometers per hour, the driving speed of the students in the car is 50 kilometers per hour, and the driving speed of the empty car is 60 kilometers per hour. Question: To make the two classes of students reach the park at the same time, what fraction of the whole journey should the students in the first class walk?
六年级一班的六年级二班的同学去两河村公园春游，但只有一辆校车接送．一班的学生坐车从学校出发的同时，二班的学生开始步行；车到途中某处，一班的学生下车步行，车立即返回接二班的学生，幵直接开往公园．两个班的学生步行速度均为每小时5千米，汽车载学生的行驶速度为每小时50千米，空车行驶速度为每小时60千米．问：要使两班学生同时达到公园，一班的学生要步行全程的几分之几？
<gadget id="calculator">1 / 50</gadget>
<output>1/50 = around 0.02</output>

<gadget id="calculator">1 / 60</gadget>
<output>1/60 = around 0.016667</output>

<gadget id="calculator">(1/50) + (1/60)</gadget>
<output>11/300 = around 0.036667</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">2 / 60</gadget>
<output>1/30 = around 0.033333</output>

<gadget id="calculator">(1/5) + (1/50) + (1/30)</gadget>
<output>19/75 = around 0.253333</output>

<gadget id="calculator">(11/300) / (19/75)</gadget>
<output>11/76 = around 0.144737</output>

<result>11/76 = around 0.144737</result>