Question 14989
This looks very much like another acronym, PEMDAS, which is a mnemonic (aide-memoire)for remembering the order of operations in performing multiple arithmetic operations.

P for Parentheses.  (B for Brackets?)
E for Exponents.
M for Multiplication.
D for Division.
A for Addition.
S for Subtraction.

And, when the sequence of operations entails only addition & subtraction or only multiplication & division, the order of operations is from left-to-right.