gistfile1.txt

balance = 5000
annualInterestRate = 0.04
monthlyIntr = annualInterestRate/12
lo = balance/12.00
hi = balance
guessed = False
while guessed == False:
	guess = (lo+hi)/2
	newbal = 0
	for i in range(0,12):
		newbal = (newbal-(guess))*(1+monthlyIntr)
	if newbal > 0.12:
		lo = guess
		print "too low"
		
	elif newbal < 0.12:
		hi = guess
		print "too high"
		print guess
		
	else:
		guessed = True
		break