Add comments to the following MIPS code and describe in one sentence what it com- putes. Assume that $a0 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 $al, $zero, finish add $t0, $tO, $a0 Su j loop finish: addi $t0, $t0, 100 add $vO, $t0, $zero