(Inquiry) Missing File: 7550-021.dwg - Tutorial: Importing an AutoCAD File

Hello all, good day. I was just wondering if anyone experienced or know of a workaround for the missing file "7550-021.dwg"? 

I am in the middle of my Tutorial "Importing an AutoCAD File" and cannot find the said file in my C: Drive. I even manually locate the folders one by one, and it seems that the tutorial folder related to the file is not installed or missing. Hoping for positive feedbacks. Thank you in advance everyone.