A car with a speed of 60 kilometers per hour and a bicycle with a speed of 15 kilometers per hour start from places A and B respectively, and go towards each other. After meeting, they continue to move forward at their original speed. Overtake the bicycle at 18 kilometers. How many kilometers are there between A and B?
时速60千米的汽车和时速15千米的自行车分别从甲、乙两地出发，相向而行，相遇后，各自继续以原速前进，汽车到达乙地后立即返回，在离第一次相遇点18千米处追上自行车．甲、乙两地相距多少千米？
<gadget id="calculator">60 / 15</gadget>
<output>4</output>

<gadget id="calculator">4 + 1</gadget>
<output>5</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

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

<gadget id="calculator">(1/5) * 2</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(4/5) + (2/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">(6/5) / 4</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">(2/5) - 1</gadget>
<output>-3/5 = around -0.6</output>

<gadget id="calculator">(4/5) + (-3/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(3/10) - (1/5)</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">18 / (1/10)</gadget>
<output>180</output>

<result>180</result>