total of 456 people visited the art exhibition the day before yesterday. Among them, the number of adults is three times that of children. How many people visit the art exhibition for adults?
前天共有456人参观画展．其中成年人人数是儿童的3倍，成人有多少人参观画展？
<gadget id="calculator">3 + 1</gadget>
<output>4</output>

<gadget id="calculator">456 / 4</gadget>
<output>114</output>

<gadget id="calculator">456 - 114</gadget>
<output>342</output>

<result>342</result>