XCL * ZCB _________ LZXP SZRR CCZB ____________ ZDKBKP

xcl * zcb _________ lzxp szrr cczb ____________ zdkbkp

XCL
* ZCB
_________
LZXP
SZRR
CCZB
____________
ZDKBKP

take xcl *c=szrr if c multiply in cl then check value produces rr
so first check (3,7) or (4,7) or (7 ,3) or (8, 6)
if we put these value then (7,3) satisfy it.
937*874=850402

973
*874
———-
3892
6811
7784
———–
850402