There are twice as many boys as girls in a school. There are 456 students in the school, how many boys are there?
某学校的男生是女生的2倍．学校一共有456名学生，请问男生有多少人？
<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>

<result>304</result>