$$P = m \times Q$$

$$R = n \times P$$

$$R = n \times (m \times Q)$$

$$R = nm \times Q$$

scalar multiplication distributes over addition

$$P = (n \times Q) + (m \times Q)$$

$$P = (n + m) \times Q$$

$$P = (n^{-1})^{-1} \times Q$$

$$P = n \times Q$$

$$a^{-1} = a^{p-2} (mod\ p)$$

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