diff --git a/BinOpValue.cpp b/BinOpValue.cpp
index a057d27..f48f63f 100644
--- a/BinOpValue.cpp
+++ b/BinOpValue.cpp
@@ -6,15 +6,48 @@
  */
 
 #include "BinOpValue.h"
+#include "Util.h"
 
 namespace ParseTree {
 
-BinOpValue::BinOpValue(std::string op, Value *a, Value *b) {
+using namespace std;
+
+BinOpValue::BinOpValue(string op, Value *a, Value *b) {
 	this->op=op;
 	this->a=a;
 	this->b=b;
 }
 
+#define TRY_NUM(OP) try{                 \
+		double x=str2num(a);     \
+		double y=str2num(b);	 \
+		return num2str(x OP y);  \
+	}catch(string &tx){               \
+		return "NaN";		 \
+	}//end try                       \
+
+
+string BinOpValue::getValue(){
+	string a=this->a->getValue();
+	string b=this->b->getValue();
+	if(!op.compare("+")){
+	try{
+		double x=str2num(a);
+		double y=str2num(b);
+		return num2str(x+y);
+	}catch(string &tx){
+		return a+b;
+	}//end try
+	}else if(!op.compare("-")){
+		TRY_NUM(-);
+	}else if(!op.compare("*")){
+		TRY_NUM(*);
+	}else if(!op.compare("/")){
+		TRY_NUM(/);
+	}else return a+b;
+	return "MAJICS_VALUE";
+}
+
 BinOpValue::~BinOpValue() {
 	// TODO Auto-generated destructor stub
 }
diff --git a/BinOpValue.h b/BinOpValue.h
index 64d36e1..120e060 100644
--- a/BinOpValue.h
+++ b/BinOpValue.h
@@ -19,6 +19,7 @@ class BinOpValue: public ParseTree::Value {
 	Value *b;
 public:
 	BinOpValue(std::string op, Value *a, Value *b);
+	std::string getValue();
 	virtual ~BinOpValue();
 };
 
diff --git a/Util.h b/Util.h
new file mode 100644
index 0000000..7983940
--- /dev/null
+++ b/Util.h
@@ -0,0 +1,11 @@
+/*
+ * Util.h
+ *
+ *  Created on: Apr 27, 2013
+ *      Author: jimtahu
+ */
+
+#include <string>
+
+double str2num(std::string text);
+std::string num2str(double val);