According to Baidu question bank query, a= 18! Is a mathematical expression, which means calculating the factorial of 18. The factorial value of 18 is:18×17×16× ... 2×1= 2598960000000000000. Therefore, a =/kloc- It means that this huge factorial value is assigned to the variable a.

Mathematical expressions are expressions that use mathematical operators (including addition, subtraction, multiplication, division, exponent, root, logarithm, etc.). ) and brackets to connect numbers and letters.