group of 38 male monkeys, female monkeys, and baby monkeys picked 266 peaches every day. It is known that a male monkey picks 10 peaches a day, a female monkey picks 8 peaches a day, and a baby monkey picks 5 peaches a day. It is also known that there are 4 fewer male monkeys than female monkeys, so how many young monkeys are there in this group of monkeys?
一群公猴、母猴、小猴共38只，每天摘桃266个．已知1只公猴每天摘桃10个，1只母猴每天摘桃8个，1只小猴每天摘桃5个．又知公猴比母猴少4只，那么这群猴子中，小猴有多少只？
<gadget id="calculator">12 - 4</gadget>
<output>8</output>

<gadget id="calculator">38 - 12 - 8</gadget>
<output>18</output>

<result>18</result>