At 6 o'clock in the morning, a car drives from place A to place B, and travels 40 kilometers in the first hour. At this speed, it arrives 1 hour later than the original plan, so it travels at a speed of 50 kilometers per hour. Originally planned to arrive 1 hour earlier, how many kilometers are there between A and B?
早晨6时一辆汽车从甲地开往乙地，第一个小时行驶40千米，照这样的速度，比原计划要迟1小时到达，于是以每小时50千米的速度行驶，结果比原计划早到1小时，甲、乙两地相距多少千米？
<gadget id="calculator">50 - 40</gadget>
<output>10</output>

<gadget id="calculator">40 + 50 + 10</gadget>
<output>100</output>

<gadget id="calculator">100 / 10</gadget>
<output>10</output>

<gadget id="calculator">10 + 1</gadget>
<output>11</output>

<gadget id="calculator">40 * 11</gadget>
<output>440</output>

<result>440</result>