During the "March 15" period this year, there were 408 consumers complaining about product quality problems in a certain city, 6 people less than three times the number of complainants in the same period last year. How many people complained in the same period last year?
今年"3.15"期间，某城市因商品质量问题投诉的消费者有408人，比去年同期投诉人的3倍少6人，去年同期投诉的有多少人？
<gadget id="calculator">408 + 6</gadget>
<output>414</output>

<gadget id="calculator">414 / 3</gadget>
<output>138</output>

<result>138</result>