Take some coins from a pile of 5 cents, 2 cents, and 5 cents, and combine them into 1 dime. How many different ways are there?
从1分，2分，5分硬币各有5枚的一堆硬币中取出一些，合成1角，共有不同的取法多少种．
<gadget id="calculator">2 + 2 + 1 + 2</gadget>
<output>7</output>

<result>7</result>