Two people, A and B, go from A to B at the same time. A walks 60 meters per minute, and B walks 50 meters per minute. After 3 minutes, how many meters are there between them?
甲乙两人同时从A地到B地，甲每分钟走60米，乙每分钟走50米，经过3分钟后，两人相距多少米？
<gadget id="calculator">60 - 50</gadget>
<output>10</output>

<gadget id="calculator">10 * 3</gadget>
<output>30</output>

<result>30</result>