/sci/ - Science & Math

Let's pretend that I am completely retarded with math and have to teach myself from scratch.
I have the following thing
(−17) · (−13) − |(−66) : (−11) + |−64| : 8| − |(−81) : (−27) − (−21)| =
The thing I wonder is whether || works similar to parantheses and the first and last, second and second to last and middle ones are part of the same unit or whether it's just 3 blocks of numbers inside of that.

>>12015702
>hurr durr the physical theory that is backed by decades of evidence and that was used to build the machine im using right now is wrong
>everything works like the things that i can hold in my hand
>fields dont make sense to me so they are wrong
>everythings actually a small ball because i can imagine that