cryptarithm

Solve the following cryptarithm:

IF + SANTA + DID = EXIST

Here is the answer:


The following alphametic puzzle:

    IF
 SANTA
+  DID
------
 EXIST

has 1 solution.

It is:

    15    A=9 D=8 E=7 F=5 I=1  
 69329    N=3 S=6 T=2 X=0
+  818
------
 70162