Python reverse engineering - why the code produced this particular result

I was asked a question about why the following code gives the following result:

def find(j):
    if(j>1):
        j=find(j//10)-(j%10)
        print(j)
    else:
        j=0
    return j
i=122
k=find(i)

RESULT:

-2
-4

Why that particular result? Here is what I have so far:

def find(j) – defying function find with j being an argument if j is greater than 1, the argument j within find function is divided by 10 122 % 10 = 2 print (j) – calls function find to display

From this point on, I am struggling. Why -2 and where is -4 coming from?