Use the MID function in cell to return the text $"$ entered the server room at $"($notice the spaces at the beginning and end of the phrase$)$ from the "Text Stamp Phrase" in cell C$2).$

a$.$ Use a reference to the location of the $"$#$"$ symbol in cell $(4)$ as the "start$\_$num" argument.

b$.$ Since the $"$fy$"$ symbol is $1$ character before the text you want to return, you will need to adjust the $"[$start$\_$num$]"$ argument by adding $1$ to the reference to cell $(4).$

c$.$ Use the difference between the location of the $"$#$"$ symbol $($cell $(4))$ and the characters $"HH"($cell $(66)$ as the "num$\_$chars" argument.