There are 38 big monkeys on the Monkey Mountain, and 18 smaller monkeys than the big monkeys. How many monkeys are there in total on the mountain?
猴山上的大猴子38只，小猴子比大猴子少18只，山上一共有多少只猴子？
<gadget id="calculator">38 - 18</gadget>
<output>20</output>

<gadget id="calculator">20 + 38</gadget>
<output>58</output>

<result>58</result>