to whoever doesn’t know what 100 pentated to 728 or close to that, then imagine this: 100^^728 that is 100 tetrated to 728, or 100^728 repeated 728 times meanwhile 100 pentated to 728 is 100^^^728, which is 100^^728 repeated 728 times. now behind 100^^728 is 100^728, which is 100 x 728 repeated 728 times. and finally, 100 x 728, which is 100 + 728 repeated 728 times. I don’t need to explain addition, do I? You can say in the comments if a part of it is wrong, so I can update this.
credits to zvardin for the sudden idea