linguistic:paraphrasing
Conversion through addition and multiplication

It is also possible to make the conversion by assigning each place in the source base the hexadecimal representation of its place value — before carrying out multiplication and addition to get the final representation.For example, to convert the number B3AD to decimal, one can split the hexadecimal number into its digits: B (11), 3 (3), A (10) and D (13), and then get the final result by multiplying each decimal representation by 16 (p being the corresponding hex digit position, counting from right to left, beginning with 0). In this case, we have that:

B3AD = (11 × 16) + (3 × 16) + (10 × 16) + (13 × 16)

which is 45997 in base 10.