Cars A and B start from places A and B at the same time and drive toward each other. After 5 hours, the two cars meet and drive for another 3 hours. A is 135 kilometers away from point B, and B is 165 kilometers away from point A. How many kilometers away are the places?
甲、乙两车从A、B两地同时出发，相向而行，5小时后两车相遇，又行驶3小时，甲离B地135千米，乙离A地165千米，A，B两地相距多少千米？
<gadget id="calculator">135 + 165</gadget>
<output>300</output>

<gadget id="calculator">3 / 5</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>