$($a$)$ Let memory contains the values shown below $($all values in hex$),$ let all other

addresses in memory contain $005,$ and let that $r4=02c44.$ What value does the

instruction LDR r$6,[$r$4]$ place in r$6?$

$($b$)$ Let $r7=0215c$ and let $r8=7aa0.$ Use a table of addresses and contents like in

part $($a$)$ to show the value placed in memory by instruction STR r$7,[$r$8].$