The number of adults participating in the Science and Technology Museum is twice the number of children. There are a total of 456 people visiting. Among the number of visitors, how many people are more adults than children?
参加科技馆的成人人数是儿童人数的2倍，一共有456人参观，参观人数中，成人人数比儿童人数多多少人？
<gadget id="calculator">2 + 1</gadget>
<output>3</output>

<gadget id="calculator">456 / 3</gadget>
<output>152</output>

<gadget id="calculator">152 * 2</gadget>
<output>304</output>

<gadget id="calculator">304 - 152</gadget>
<output>152</output>

<result>152</result>