Xiaobing goes for a run and runs 250 meters per minute. After 5 minutes of starting, Xiaojun rides a bicycle to chase him and runs 400 meters per minute. How many minutes can he catch up?
小兵去跑步，每分钟跑250米，出发5分钟后，小军骑着自行车去追，每分钟行400米，多少分钟后可以追上？
<gadget id="calculator">400 - 250</gadget>
<output>150</output>

<gadget id="calculator">5 / 150</gadget>
<output>1/30 = around 0.033333</output>

<gadget id="calculator">250 * (1/30)</gadget>
<output>25/3 = around 8.333333</output>

<result>25/3 = around 8.333333</result>