4 eggs can be exchanged for 6 apples. According to this ratio, how many eggs are needed to exchange 12 apples.
4个鸡蛋可以换6个苹果，按这个比例，要换12个苹果，需要多少个鸡蛋．
<gadget id="calculator">12 / 6</gadget>
<output>2</output>

<gadget id="calculator">2 * 4</gadget>
<output>8</output>

<result>8</result>