The tortoise and the hare race, the whole distance is 1995 meters, the tortoise climbs 15 meters per minute, and the rabbit runs 133 meters per minute. The rabbit thought it was running fast, and fell asleep on the way, but it turned out to be 3 minutes later than the tortoise. How many minutes did the rabbit sleep on the way?
龟兔赛跑，全程1995米，乌龟每分钟爬15米，兔子每分钟跑133米．兔子自以为跑得快，在途中睡了一觉，结果反而比乌龟晚到3分钟，兔子在途中睡了多少分钟．
<gadget id="calculator">1_995 / 15</gadget>
<output>133</output>

<gadget id="calculator">133 + 3</gadget>
<output>136</output>

<gadget id="calculator">1_995 / 133</gadget>
<output>15</output>

<gadget id="calculator">136 - 15</gadget>
<output>121</output>

<result>121</result>