Distribute 30 candies to A, B, and C. The ratio between A and B is 3:2, and the ratio between B and C is 4:5. How many candies does A get?
把30颗糖分给甲、乙、丙三人，甲和乙是3：2，乙和丙是4：5，甲分到多少颗．
<gadget id="calculator">3 / 2</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">5 / 4</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">(3/2) + 1 + (5/4)</gadget>
<output>15/4 = around 3.75</output>

<gadget id="calculator">30 / (15/4)</gadget>
<output>8</output>

<gadget id="calculator">8 * (3/2)</gadget>
<output>12</output>

<result>12</result>