How to separate integer and perform calculation separately?

Question

Example
x= (1798)
#i want to add each number separately with each other
x=1+7+9+8
print (x)
output
25
I know this is pretty basic but i really don't find any solution of this.

Answer 1

Gagan Deep Singh use "join"
x = 1798
y = "+".join(x)
# "1+7+9+8" now this is a string
use "eval" to solve math equations which are in string.
line this.
print(eval(y))
output = 25

Answer 2

https://www.codeproject.com/Questions/92429/how-seperate-integer-part-and-fractional-part

Answer 3

like this...?
https://code.sololearn.com/cRjz3Cd2qb0G/?ref=app

Answer 4

https://code.sololearn.com/c1I7VyvdqUZw/?ref=app