Xiaoyue and Dongdong start from two places 420 meters apart and travel in the same direction, and Dongdong starts 2 minutes earlier than Xiaoyue. It is known that Xiaoyue’s speed is 60 meters per minute, and Dongdong’s speed is 50 meters per minute. Meters, let me ask: when Xiaoyue catches up with Dongdong, how many meters has Dongdong walked?
小悦和冬冬分别从相距420米的两地出发同向而行，且冬冬比小悦先出发2分钟，已知小悦的速度是每分钟60米，冬冬的速度为每分钟50米，试问：当小悦追上冬冬的时候，冬冬已经走了多少米？
<gadget id="calculator">50 * 2</gadget>
<output>100</output>

<gadget id="calculator">420 + 100</gadget>
<output>520</output>

<gadget id="calculator">60 - 50</gadget>
<output>10</output>

<gadget id="calculator">520 / 10</gadget>
<output>52</output>

<gadget id="calculator">52 + 2</gadget>
<output>54</output>

<gadget id="calculator">54 * 50</gadget>
<output>2_700</output>

<result>2_700</result>