The tortoise and the hare are running a 2000-meter race. The tortoise walks 25 meters per minute, and the rabbit walks 320 meters per minute. The rabbit thinks it can walk faster than the tortoise, so it takes a nap on the way, but the tortoise reaches the finish line 1.25 minutes earlier than the rabbit. How many minutes did the rabbit sleep on the way? (Hint: rabbit sleeping time = turtle walking time - rabbit walking time + 1.25 minutes)
龟兔正在进行2000米竞走，龟每分钟走25米，兔每分钟走320米，兔自以为比龟走得快，就在途中睡了一觉，结果龟倒比兔提前1.25分钟到达终点，兔在途中睡了多少分钟？(提示：兔睡觉时间=龟行走时间-兔行走时间+1.25分钟)
<gadget id="calculator">2_000 / 25</gadget>
<output>80</output>

<gadget id="calculator">80 + 1.25</gadget>
<output>81.25</output>

<gadget id="calculator">2_000 / 320</gadget>
<output>25/4 = around 6.25</output>

<gadget id="calculator">81.25 - (25/4)</gadget>
<output>75</output>

<result>75</result>