There are 360 gray rabbits raised in the farm. It is known that the ratio of white rabbits to gray rabbits is 4:5. How many white rabbits are raised in the farm?
养殖场饲养灰兔360只，已知白兔与灰兔只数比是4：5，饲养场养白兔多少只？
<gadget id="calculator">360 / 5</gadget>
<output>72</output>

<gadget id="calculator">72 * 4</gadget>
<output>288</output>

<result>288</result>