某小学给学生留作业，要求为一个5000以内的加减乘除括号四则运算的题目。
要求：
1.　　　程序每次运行都生成30道包含+，-，*，/，（，）的题目。
2.　　　操作符号顺序是随机的。
3.　　　因为是小学生，没有代数和以及负数的概念，所以任何时刻减法都必须是减数小于被减数。
4.　　　任何中间过程中的除法都必须能整除，无分数的概念。
5.　　　所有中间结果和最终结果都要小于5000.
6.　　　将正确结果也输出出来，但是用16进制表示
7.　　　将结果输出到question.txt的文件中，格式如下:
100+500-300*5/6 =　　　　　　　　 (15E)
(200-50)/3 *6 -10 =　　　　　　　　 (122)
……,A primary school students to stay for a 5000, request within parentheses then add, subtract, multiply and divide the topic.
Requirements:
1 each operation procedures are generating 30 word contains+,-,*, /, (,) of the subject.
2 the random sequence is operating symbols.
3 for a pupil, no algebra and the concept of the negative and, therefore, any moment subtraction must be termed becomes less.
4 any intermediate process must be divisible by division, can not fractions.
5 all intermediate results and final results are less than 50.
6 will correct results, but also output in hexadecimal said
7 will output TXT files that question.but, format is as follows:
100+ 5-3 x 5/6 = (15E)
(200-50)/3* 6-10 = (122)
...