- =(25+7)/(56-25)x(8/3)/2+6^4x3%
- =(25+7)/(56-2^5)x(8/3):2+6^4x3%
- =(25+7)/(56-2^5)*(8/3)/2+6^4* 3%
- =(25+7)/(56-2/5)x(8/3)/2+6^4x3%