The school held a tug-of-war competition. There were 27 girls participating in the competition, and the number of boys was three times that of girls. How many students participated in the tug-of-war?
学校进行拔河比赛，参加比赛的女生有27人，男生是女生的3倍，参加拔河的同学一共有多少人？
<gadget id="calculator">27 * 3</gadget>
<output>81</output>

<gadget id="calculator">81 + 27</gadget>
<output>108</output>

<result>108</result>