The distance between A and B is 450 kilometers. A car drives from city A to city B at a speed of 90 kilometers per hour. After 2 hours, a truck also drives from city A to city B at a speed of 60 kilometers per hour. City, when the car arrives at City B, it immediately returns to City A. So, how many kilometers away from city B when the car and the truck meet?
A、B两城相距450千米，一辆汽车以每小时90千米的速度从A城开往B城，2小时后一辆卡车以每小时60千米的速度也从A城开往B城，当汽车到达B城后立即返回A城．那么，小汽车与卡车相遇时距B城多少千米？
<gadget id="calculator">450 / 90</gadget>
<output>5</output>

<gadget id="calculator">5 - 2</gadget>
<output>3</output>

<gadget id="calculator">3 * 60</gadget>
<output>180</output>

<gadget id="calculator">450 - 180</gadget>
<output>270</output>

<gadget id="calculator">90 + 60</gadget>
<output>150</output>

<gadget id="calculator">270 / 150</gadget>
<output>9/5 = around 1.8</output>

<gadget id="calculator">90 * (9/5)</gadget>
<output>162</output>

<result>162</result>