A car drives from place A to place B. It travels (1/4) in the first hour, and travels (1/3) of the whole journey in the second hour. At this time, it exceeds the midpoint of 30 kilometers. How many thousand is the distance between places A and B? rice?
一辆汽车从甲地开往乙地，第一小时行了(1/4)，第二小时行了全程的(1/3)，这时超过中点30千米，甲乙两地相距多少千米？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(1/4) + (1/3)</gadget>
<output>7/12 = around 0.583333</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(7/12) - (1/2)</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">30 / (1/12)</gadget>
<output>360</output>

<result>360</result>