There are 8 teachers participating in the tree planting activity, 56 girls, and the number of boys is three times that of girls. How many boys are there?
参加植树活动的老师有8人，女生56人，男生人数是女生的3倍，男生有多少人？
<gadget id="calculator">56 * 3</gadget>
<output>168</output>

<result>168</result>