A jacket is 128 yuan, which is 22 yuan less than three times the price of a pair of trousers. How much is this pair of trousers?
一件上衣128元，比一条裤子价钱的3倍少22元，这条裤子多少元？
<gadget id="calculator">128 + 22</gadget>
<output>150</output>

<gadget id="calculator">150 / 3</gadget>
<output>50</output>

<result>50</result>