The students participated in the spring outing, half of them rowed a boat with more than 5 people, and the remaining half took a bumper car with 12 people, and there were 30 people left. How many people participated in the spring outing this time?
同学们参加春游活动，其中一半多5人划船，余下一半又12人乘碰碰车，还剩下30人，这次参加春游活动的有多少人？
<gadget id="calculator">30 + 12</gadget>
<output>42</output>

<gadget id="calculator">42 * 2</gadget>
<output>84</output>

<gadget id="calculator">84 + 5</gadget>
<output>89</output>

<gadget id="calculator">89 * 2</gadget>
<output>178</output>

<result>178</result>