Dba_jobs.total_time ?

I have an oracle job that shows total_time = 202274 in dba_jobs table, which roughly translates to 56 hours. If this is the time taken to excute that job, does it mean that the job took 56 hours to complete ? That job is started every morning at 6:00 am and when I lookup dba_jobs_running at 9:00am, it is all done.
So what does this number 202274 in total_time really mean ?

Thanks,
Shiva.

the total time it has spent executing that job

And how do I make sure of the unit of value in this column ? Oracle says it is in secs, but 202274 is about 56 hours whereas the job seems to have been completed in 3 hours....

TOTAL time, not time for a single run, TOTAL time that has been spent executing that job

Thanks for the clarification.
Is there anyplace where I can get the time for one single execution ?