A job interview question

You went on an interview and you were shown the strange equations below:

3+4+9 =123644
5+4+5 = 202036
7+2+5 = 141021
7+7+2 = 491456

The interviewer asked you to analyse the equations.
Imagine you are put in such situation. Can you find something irregular on those rows? Can you find an error?

(*such question is given on a job interview in a company looking for programmers)

Publish your answer here - A job interview question

Solved By: shashank201090