In order to estimate the number of snub-nosed monkeys in a protected area, 24 were caught and marked for the first time, and all of them were released, and 80 were caught for the second time, and 4 were found to be marked last time. Based on this, estimate the total number of golden monkeys in the reserve
为了估计某保护区内金丝猴的数量，第一次捕24只并做标记后全部放回，第二次捕80只，发现有4只是上次做了标记的．据此估计该保护区金丝猴的总只数为多少
<gadget id="calculator">24 * 80</gadget>
<output>1_920</output>

<gadget id="calculator">1_920 / 4</gadget>
<output>480</output>

<result>480</result>