Add comments to the following MIPS code (12 marks) and (2) describe in one sentence what it computes (3 marks). Assume that Sa0 and $al are used for the input and both initially contain the integers a and b, respectively. Assume that $v0 is used for the output. add $t0, $zero, $zero loop: beq $a1, $zero, finish add $t0, $t0, $a0 sub $a1, $a1, 1 j loop finish: addi $t0, $t0, 50 add $v0, $t0, $zero Ac