Machine/assembly language need answer asap

7. Assume the following register contents: 2 points Sto 0x AAAAAAAA, $t1 0x12345678 a) For the register values shown above, what is the value of $12 for the following sequence of instructions? sll $t2, St0, 4 andi $t2, $t2,-1 b) For the register values shown above, what is the value of S2 for the following sequence of instructions? srl $t2, StO, 3 andi $12, St2, 0xFFEF