A car travels 180 kilometers from place A to place B in 4 hours. At this speed, it will take 3 hours to reach place B. How many kilometers are there between places A and B? (Answer with the knowledge of proportion)
一辆汽车从甲地开往乙地，4小时行驶180千米，照这样的速度，到达乙地还需3小时，甲乙两地之间有多少千米？(用比例的知识解答)
<gadget id="calculator">180 / 4</gadget>
<output>45</output>

<gadget id="calculator">45 * 3</gadget>
<output>135</output>

<gadget id="calculator">45 * 4</gadget>
<output>180</output>

<gadget id="calculator">135 + 180</gadget>
<output>315</output>

<result>315</result>