Okay, we have it symbolically solving the equations. Now, simply iterate through the final answer's symbolic answer 
and pick out all the variables that are there. Then, in a nested manner, loop through each of them and calculate at 
each change and then add to the sum.

Step 1:
	write a func to flag the symbol tables entries as candidates for iteration
		a. write find_iterator_variables()
		b. write mark_iterator_variable() in the symbol table code. 
			This function will set the iterate flag to 1.
	DONE!
Step 2:
	do the iterations based on the flagged symbol table entries.
	I NEED AN ALGORITHM!

	Recursive.
	if there are no other variables to iterate over
		evaluate
	take our current iterative variable and for loop across all possible values
		at each value, call this function again.
	
	the answer will be in the total sum.
