The phrase "so easy that" is a common phrase used in written English and it can be used to describe something that is very easy to do.
For example, "The assignment was so easy that I finished it in less than an hour."
It's what Socrates said: 'Know thyself.' 'Not so easy': That's what Freud said".
These cookies are so easy that kids can make them.
So easy that even American students can do it.
"He finds everything so easy that he doesn't really concentrate".
No exam should be so easy that everyone can pass.
He found drawing and other art activities so easy that he had disdain for them.
It's so easy that at first you'll probably think nothing is happening.
It's pretty easy to use, but not so easy that it couldn't benefit from some instructions.
While maintaining good accuracy, the solution becomes so easy that even parameter estimations may be carried out.
Technology has made travel so easy that getting away is getting hard.
By contrast, liquid refuelling is so easy that XCOR plans that its ships will make four trips a day.
