If an integer is combined with the three numbers 1, 2, and 3 to form a formula through addition, subtraction, multiplication, and division (you can add parentheses), so that the result is equal to 24, then this integer is called usable, so is 11 usable?
如果一个整数，与1，2，3这三个数，通过加减乘除运算(可以添括号)组成算式，使结果等于24，那么这个整数就称为可用的，则11可用吗？
<result>11</result>