There are 320 gray rabbits in the farm, which is twice the number of black rabbits, and the number of white rabbits is three times the sum of the number of gray rabbits and black rabbits. How many white rabbits are there?
饲养场有灰兔320只，是黑兔只数的2倍，白兔的只数是灰兔和黑兔只数总和的3倍，白兔有几只？
<gadget id="calculator">320 / 2</gadget>
<output>160</output>

<gadget id="calculator">320 + 160</gadget>
<output>480</output>

<gadget id="calculator">480 * 3</gadget>
<output>1_440</output>

<result>1_440</result>