A car drives from place A to place B. It travels 1/3 of the whole journey, and it takes another 120 kilometers to complete half of the journey. How many kilometers are there between places A and B?
一辆汽车从甲地开往乙地，行驶了全程的(1/3)，再走120千米才能完成全程的一半，甲乙两地相距多少千米？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

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

<gadget id="calculator">(1/2) - (1/3)</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">120 / (1/6)</gadget>
<output>720</output>

<result>720</result>