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I wrote
In this formula, the number of nodes is multiplied to (P + A), because each node must be checked against the list of anchors, and if it matches any of them, a pattern must be retrieved from the list of patterns.
Could it be written as
In this formula, the number of nodes is multiplied to (P + A) because for each node it (the node) must be checked against the list of anchors, and if it matches any of them, a pattern must be retrieved from the list of patterns.
First, when describing the action of multiplication (arithmetic), like N*M, we usually say "N is multiplied by M", not "to M".
Second, in the second sentence the phrase "because for each node the node must be checked ..." seems to contain unnecessary repetition (yes, it was I who replaced the 'it' with "the node", and no, the repetition is not due to that, the repetition exists even with the "it" in place).
A simpler way to say what I believe you are trying to say, is
In this formula, the number of nodes is multiplied by (P + A), to show that each node is checked against the list of anchors, and if a match is found, a pattern must be retrieved from the list of patterns.
