You both are mathematically challenged! LOL

In the next verse the singer is the only one left, he and his beer.

Of course, in the last verse that we don't sing, and no one else sings that I'm aware of it, the singer apparently goes as well, "steerage" being a reference to cheap nautical passage:

But I'll try my luck for a cheque Out Back, then a last good-bye to the bush;
For my heart's away on the Outside Track, on the track of the steerage push.

Charley Noble