Lets do the Math.
As I have been at study on math I have realized 7 times 70 = 490. Is what the verse Matthew 18 verse 22 has told us. In which is the same multiplication the professor is talking about in above video. Here is the verse Jesus saith unto him, I say not unto thee, Until seven times: but, Until seventy times seven. In which I thought was interesting. Here is the whole chapter of what is being said. http://biblehub.com/kjv/matthew/18.htm
links to my studys last night. link one http://www.intmath.com/exponential-logarithmic-functions/1-definitions-exp-log-fns.php link two. http://www.livescience.com/51399-eulers-identity.html