A car drives from place A to place B and travels 150 kilometers in 2.5 hours. At this speed, it takes another 4 hours to reach place B. How many kilometers are there between places A and B? (Solve with ratio)
一辆汽车从甲地开往乙地，开出2.5小时行了150千米，照这样的速度又行了4小时到达乙地，甲乙两地相距多少千米？(用比例解)
<gadget id="calculator">150 / 2.5</gadget>
<output>60</output>

<gadget id="calculator">60 * 2.5</gadget>
<output>150</output>

<gadget id="calculator">60 * 4</gadget>
<output>240</output>

<gadget id="calculator">150 + 240</gadget>
<output>390</output>

<result>390</result>