Create class Multiply and create test multDoubleDoubleExpressionTest
test multDoubleDoubleExpressionTest pass
create tests multIntegerDoubleExpressionTest and multIntegerIntegerExpressionTest
create classes MultiplyIntegerDouble, MultiplyDoubleDouble, MultiplyIntegerInteger and test pass
Create package parser with classes Token, ShuttingYardParser, parser and create  Parsertest
Simple expression shuttingYardParserTest pass
Rename additionParserTest and create substractParserTest
Create class OperationDictionary, modify class Parser
Delete class ShuttingYardParser
Rescute Parser
Rescute Parser
Create MyParser
Create Test adittionAdditionParserTest and Pass
Delete Class ExpressionFactory