li a0, 420
li a1, 69

multiply:
	li t0, 0
loop:
	andi t1, a1, 1
	beqz t1, no_add
	add t0, t0, a0
no_add:
	slli a0, a0, 1
	srli a1, a1, 1
	bnez a1, loop
	mv a0, t0
	j ra