SQL & PL/SQL :: Convert The Field Value Into Numeric Form?

I want to convert the field value into numeric form using the formula:

∑[((radix)^ position * alphvalue) mod PR]
where alphvalue A= 10, B = 11, C = 12, D = 13,E = 14............. S = 28, ...........Z = 35, radix = 36, PR= 731
The value of position is marked from right to left starting with 0.

For Example:
ASIN
Let PR = 731 (large prime number)

∑[((36)^3 * 10)mod 731) + ((36)^2 * 28)mod 731)+
((36)^1 * 18)mod 731) + ((36)^0 * 22)mod 731) ]
= 182+ 469 + 648 + 22
= 1321

is it possible that it pick the field value and convert it into numeric form.