A $1$MB memory block is constructed from $16$KB memory block. The target memory word is $64$b and the base memory building block word is $8$b$.$ The memory tiles are arranged in $2$D array M$[$i$][$j$],$ where row index $($i$)$ expand the memory depth, and column index $($j$)$ expands the word size. Answer the following questions about this memory architecture: