????????
      ----------
QXQRF ) FPRNXECR
       -FXRNC
        =====
         YCCQE
        -YQXXQ
         =====
          PCQRC
         -PQQRR
          =====
           PXXER
          -YQXXQ
           =====
           ?????

base: 10
symbols: CEFNPQRWXY
missing: W
difficulty: medium

Borrows and Takes:
=================

         ? ? ? ? ? ? ? ?
      -- - - - - - - - -
QXQRF )  F P R N X E C R
       - F X R N C
         = = = = =
           Y C C Q E
         - Y Q X X Q
           = = = = =
             P C Q R C
           - P Q Q R R
             = = = = =
               P X X E R
             - Y Q X X Q
               = = = = =
               ? ? ? ? ?

Relational Chains:
=================

  * 

NOTE: '<'  denotes EXACTLY ONE less than
      '<<' denotes SOMEWHAT less than

Range Table:
===========

      0 1 2 3 4 5 6 7 8 9 
                          

C = { 0 1 2 3 4 5 6 7 8 9 }
E = { 0 1 2 3 4 5 6 7 8 9 }
F = { 0 1 2 3 4 5 6 7 8 9 }
N = { 0 1 2 3 4 5 6 7 8 9 }
P = { 0 1 2 3 4 5 6 7 8 9 }
Q = { 0 1 2 3 4 5 6 7 8 9 }
R = { 0 1 2 3 4 5 6 7 8 9 }
W = { 0 1 2 3 4 5 6 7 8 9 }
X = { 0 1 2 3 4 5 6 7 8 9 }
Y = { 0 1 2 3 4 5 6 7 8 9 }

Multiplication Table:
====================

[*]   1  2  3  4  5  6  7  8  9 
   +--------------------------- 
 1 |  1  2  3  4  5  6  7  8  9
 2 |  2  4  6  8 10 12 14 16 18
 3 |  3  6  9 12 15 18 21 24 27
 4 |  4  8 12 16 20 24 28 32 36
 5 |  5 10 15 20 25 30 35 40 45
 6 |  6 12 18 24 30 36 42 48 54
 7 |  7 14 21 28 35 42 49 56 63
 8 |  8 16 24 32 40 48 56 64 72
 9 |  9 18 27 36 45 54 63 72 81