Question

If
397 is coded as 210191,
459 is coded as 360881 and
123 is coded as 030260

Then what is the code for 789?

Answer 1

630842

397 is coded as 210191 (3×7)21 (3+7-9)01 (3+9+7=19)91
459 is coded as 360881 (4×9)36 (4+9-5)08 (4+5+9=18)81
123 is coded as 030260 (1×3)03 (1+3-2)02 (1+2+3=06)60

Then
789 is coded as 630842 (7×9)63 (7+9-8)08 (7+8+9=24)42