A and B go from A to B at the same time. A rides 250 meters in each branch, and rests for 20 minutes after each 10 minutes; ． How many meters are there between A and B?
甲乙两人同时从A地到B地，甲骑车每分行250米，每行10分后休息20分；乙每分行100米，但不休息，结果在甲即将休息时两人同时到达B地．AB两地多少米？
<gadget id="calculator">250 * 10</gadget>
<output>2_500</output>

<gadget id="calculator">100 * 10</gadget>
<output>1_000</output>

<gadget id="calculator">2_500 - 1_000</gadget>
<output>1_500</output>

<gadget id="calculator">30 * 100</gadget>
<output>3_000</output>

<gadget id="calculator">3_000 - 2_500</gadget>
<output>500</output>

<gadget id="calculator">1_500 / 500</gadget>
<output>3</output>

<gadget id="calculator">3 * 30</gadget>
<output>90</output>

<gadget id="calculator">100 * 90</gadget>
<output>9_000</output>

<gadget id="calculator">9_000 + 1_000</gadget>
<output>10_000</output>

<result>10_000</result>