Cars A and B start from A and B at the same time and drive towards each other, and meet each other in 5 hours. After meeting each other and driving for 3 hours, car A arrives at point B and point B, and car B is still 300 kilometers away from point A. How many kilometers are there between A and B?
甲、乙两车分别从A、B两地同时出发相向而行，5小时相遇．相遇后又各自行驶3小时，甲车到达B乙地，乙车离A地还有300千米．A、B两地相距多少千米？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">3 + 5</gadget>
<output>8</output>

<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">(1/5) - (1/8)</gadget>
<output>3/40 = around 0.075</output>

<gadget id="calculator">(3/40) * 8</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 - (3/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">300 / (2/5)</gadget>
<output>750</output>

<result>750</result>