how to convert text into expression

2016 8 19
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更新时间：2016 8 19
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I have a text file which has string say as (50%((15000-a)+b)). is there any way to calculate this expression.

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Stephen23
Stephen23 2016-8-19
编辑：Stephen23 2016-8-19
Note that (50%((15000-a)+b) is not valid MATLAB syntax, and appears to be written in some other language: you would have to write a parser for whatever language that is. This is not a trivial task.

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