You can see if the program ran correctly by examining the memory at the locations X and Y (in this program that is locations 109 and 10A). If your program did not run correctly, you can debug it by Stepping through the program. Once it works, modify it so that instead of hard coding X and Y in the program, Input a number (call it X) using the Input instruction. Store the result of doubling X in Y and then Output Y. This means you only have to call Subr once. Upload your assembly file (.mas) to this activity.