new_contents: bignumber = 7316717653133062491922511967442657474235534919493496983520312774506326239578318016984801869478851843858615607891129494954595017379583319528532088055111254069874715852386305071569329096329522744304355766896648950445244523161731856403098711121722383113622298934233803081353362766142828064444866452387493035890729629049156044077239071381051585930796086670172427121883998797908792274921901699720888093776657273330010533678812202354218097512545405947522435258490771167055601360483958644670632441572215539753697817977846174064955149290862569321978468622482839722413756570560574902614079729686524145351004748216637048440319989000889524345065854122758866688116427171479924442928230863465674813919123162824586178664583591245665294765456828489128831426076900422421902267105562632111110937054421750694165896040807198403850962455444362981230987879927244284909188845801561660979191338754992005240636899125607176060588611646710940507754100225698315520005593572972571636269561882670428252483600823257530420752963450
  
  
  teststring = str(bignumber)[0:13]
  
  
  def anyZeroes(number):
  	if(any(elem == '0' for elem in number)):
  		return True
  	else:
  		return False
  
  
  def stringProduct(string):
  	product = 1
  	for elem in string:
  		product *= int(elem)
  	return product
  
  
  print(teststring)
  print(len(teststring))
  
  biggestprodut = 0
  
  for x in range(0, len(str(bignumber))-13, 1):
  	#print("Current x:" + str(x))
  	substring = str(bignumber)[x:(x+13)]
  	if not anyZeroes(substring):
  		stringporduct =stringProduct(substring)
  		if stringporduct > biggestprodut:
  			biggestprodut = stringporduct
  
  
  print(biggestprodut)
  
subject: Create largest_product.py