Al wanted to use my computer to do some simple calculations, so I lent him the use of my R terminal for a bit. He complained though, saying it wasn't set up how he liked it. I said "No problem Al, set it up how you like and I'll just revert it later." This suited Al, and I left him to it. Al isn't a big fan of online R implementations like TIO, they don't seem to support his preferred way of coding.
After a few minutes, I came back and asked how it went. "everything fine", he said. I glanced at his session and it didn't look fine to me — only one of the four results looked correct! But Al knows R inside out, he must have been telling the truth.
Here is a transcript of Al's R session, as it appeared on the screen (Al uses RStudio 1.1.463 and R 3.6.3 if it matters, but I don't think it does here). The question is, how did Al "set up" his session to produce this output?
## what did Al type here? 32+55  87 14*21  294 91/7  13 12-21  -9
- Al only typed one function call which is somewhere in the standard R libraries.
- the function didn't import any code or refer to any external files (no
- Al didn't type
cat("55+23\n......-9"), it is something that could reasonably be interpreted as "setting up an R session"
- the primary scoring criterion is the number of bytes in the answer. Ties will be broken in ASCII-order, that is, if two valid answers are the same length the winner is the one which is first "alphabetically" (according to ASCII ordering).