For the given MARIE code

a$)$ What needs to be witten in the given space at line $8$ to complete the code?

b$)$ What needs to be written in the given space at line $10$ to complete the code?

c$)$ What needs to be written in the given space at line $13$ to complete the code?

d$)$ What does the code calculate?

e$)$ After the code fully run, what will be the value of i$?$