Polly Plus - short story - was created in 1978.
You don't have to make a title for your stories -- it helps you and the reader to know what story they're talking about, though. Plus, if the reader wants to recommend the story to somebody, it helps them find that story.
There is no equation in the question, only an expression.
short
A-Plus was created in 1985.
Hybrids Plus was created in 2006.
Jobcentre Plus was created in 2002.
Pnai Plus was created in 1989.
Plus Communication was created in 2010.
Portraits Plus was created in 1993.
Koes Plus was created in 1969.
Rogers Plus was created in 1988.
XPlanner-plus was created in 2004.