Math operations

 

 

 

The figure, after obtaining commodity finance, shipping operations are added, the total amount of the order was. Examples of how the parsing RB implementations

 

1, first acquired values ​​of these three parameters

 

 

 

 

 

 

 

2, out of the acquired value of the above, the string will not be the same type, it is necessary to convert

 

 

 

 

3, the next step is to add the process (following two formulas can achieve)

 

 

 

 

4, the final match result

 

 

 

 

Reference website: http://blog.csdn.net/mengfanbo123/article/details/10453693