Use the three numbers 1, 2, and 3 each time (only use these three numbers) to form a number, how many integers and decimals can be formed.
每次都用上1、2、3三个数字(只用这三个数字)，组成一个数，可以组成整数和小数共有多少个．
<gadget id="calculator">6 + 6 + 6</gadget>
<output>18</output>

<result>18</result>