Solve the following cryptarithm:

 A B S C I S S A
         A R E A
     C I R C L E
       E Q U A L
       E U L E R
+    S C A L A R
----------------
 C A L C U L U S




------------------------------------------------------------



Here is the answer:

The following alphametic puzzle:

 ABSCISSA
     AREA
   CIRCLE
    EQUAL
    EULER
+  SCALAR
---------
 CALCULUS

has 1 solution.

It is:
A=1 B=9 C=2 E=6 I=4 L=0 Q=7 R=5 S=8 U=3 

 19824881    
     1561
   245206
    67310
    63065
+  821015
---------
 21023038