car travels 126 kilometers from city A to city B in 3 hours. At this speed, it takes 7 hours to complete the journey. How many kilometers are there between cities A and B?
一辆汽车从甲城到乙城3小时行126千米，照这样的速度，行完全程共用7小时，甲、乙两城相距多少千米？
<gadget id="calculator">126 / 3</gadget>
<output>42</output>

<gadget id="calculator">42 * 7</gadget>
<output>294</output>

<result>294</result>