The five-star elementary school students went to visit the museum. 354 people in the sixth grade went to the museum, 63 people were three times less than the number in the fifth grade. How many people went to the fifth grade?
五星小学的同学去参观博物馆，六年级去了354人，比五年级去的人数的3倍少了63人，五年级去了多少人？
<gadget id="calculator">354 + 63</gadget>
<output>417</output>

<gadget id="calculator">417 / 3</gadget>
<output>139</output>

<result>139</result>