There were 429 adults who visited the Science and Technology Museum on May 1st, three times the number of children. So how many people visited in total?
"五一"节参观科技馆的成人有429人，是儿童人数的3倍．那么一共有多少人参观？
<gadget id="calculator">429 / 3</gadget>
<output>143</output>

<gadget id="calculator">143 + 429</gadget>
<output>572</output>

<result>572</result>