A white mountain fox sled from the top of the mountain to the foot of the mountain to participate in the snow mountain animal festival. If it travels 250 meters per minute, it is expected to arrive in 15 minutes, but when it is gliding to (3/5) distance, the sled suddenly breaks down, stops and repairs in a hurry, and it takes 1.2 minutes to fix it, and then it continues to move forward, if it wants to If you arrive at the foot of the mountain within the originally scheduled time, how many meters must it travel per minute for the rest of the journey?
一只白山狐滑雪橇从山顶到山脚参加雪山动物联欢会．如果它每分钟行250米，预计15分钟到达，但滑行到(3/5)路程时，雪橇突然出了故障，急忙停下来修理，用了1.2分钟才修好，之后它继续前进，如果它要在原来预定的时间内到达山脚，那么余下的路程它每分钟必须比原来多行多少米？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">250 * 15 * (2/5)</gadget>
<output>1_500</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 - (3/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">15 * (2/5)</gadget>
<output>6</output>

<gadget id="calculator">6 - 1.2</gadget>
<output>4.8</output>

<gadget id="calculator">1_500 / 4.8</gadget>
<output>312.5</output>

<gadget id="calculator">312.5 - 250</gadget>
<output>62.5</output>

<result>62.5</result>