A, B, and C walk at speeds of 30 meters, 40 meters, and 50 meters per minute, respectively. A and B are at A, C is at B, and they are walking toward each other at the same time, and C meets A 10 minutes after meeting B. Find the distance between A and B in meters?
甲、乙、丙三人行走的速度依次分别为每分钟30米、40米、50米．甲、乙在A地，丙在B地，同时相向而行，丙遇乙后10分钟和甲相遇．求A、B两地相距多少米？
<gadget id="calculator">30 + 50</gadget>
<output>80</output>

<gadget id="calculator">50 * 10</gadget>
<output>500</output>

<gadget id="calculator">40 * 10</gadget>
<output>400</output>

<gadget id="calculator">500 + 400</gadget>
<output>900</output>

<gadget id="calculator">40 - 30</gadget>
<output>10</output>

<gadget id="calculator">900 / 10</gadget>
<output>90</output>

<gadget id="calculator">80 * 90</gadget>
<output>7_200</output>

<result>7_200</result>