简单的计算机，可以进行加减乘除，开平方这些简单的运算

基本运算服务的开发与部署。具体内容：实现加、减、乘、除、平方、开平方等常用数学运算 webservice(The development and deployment of basic operational services. Specific content: the common mathematical operation of adding, subtraction, multiplication, division, square, square and other common m