A car travels from point A to point B. The ratio of the distance traveled to the distance traveled is 2:3. If it travels another 15 kilometers, it is exactly half of the journey. How many kilometers is the distance between places A and B?
一辆汽车从甲地向乙地行驶，已行路程和未行路程的比是2：3，如果再行15千米，正好行了全程的一半，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">2 + 3</gadget>
<output>5</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(1/2) - (2/5)</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">15 / (1/10)</gadget>
<output>150</output>

<result>150</result>