.data
	r0	dd 0
	r1	dd 0

.code
mov eax, 1 ; n=1;
mov ebx, 3 ; d0=3;
mov edx, 7 ; d1=7;

call ITRL

push eax
div ebx
mov r0, eax
pop eax
 
mov eax, 1 ; n=1;
mov ebx, 5 ; d0=5;
mov edx, 9 ; d1=9;

call ITRL

push eax
div ebx
mov r1, eax
pop eax 

pushad
mov eax, r0
mov ebx, r1
mov ecx, 4
sub eax, ebx
mul ecx
mov r0, eax
mov r1, ebx
popad

; rest of code

ITRL:	mov ecx, 1000
	mul edx		; eax = eax * edx
	add eax, ebx	; eax = eax + ebx
	push eax
	mov eax, ebx
	mul edx		; ebx = ebx * edx
	mov ebx, eax
	add edx, 4	; edx = edx + 4
	pop eax
	dec ecx
	cmp ecx, 0
	jne ITRL
	ret