Let's dive into this subtraction. We'll start with 719691516 and subtract 159567321 from it.

Step 1: We'll start by subtracting the digit 1 and the borrow 0 from 6 in column 1 and get 5.
5 is the first digit of our result.

Step 2: We'll start by subtracting the digit 2 and the borrow 0 from 1 in column 2 and get -1.
We add -1 to 10 and get 9 as the next digit of the result.

Step 3: We'll start by subtracting the digit 3 and the borrow 1 from 5 in column 3 and get 1.
1 is the next digit of our result.

Step 4: We'll start by subtracting the digit 7 and the borrow 0 from 1 in column 4 and get -6.
We add -6 to 10 and get 4 as the next digit of the result.

Step 5: We'll start by subtracting the digit 6 and the borrow 1 from 9 in column 5 and get 2.
2 is the next digit of our result.

Step 6: We'll start by subtracting the digit 5 and the borrow 0 from 6 in column 6 and get 1.
1 is the next digit of our result.

Step 7: We'll start by subtracting the digit 9 and the borrow 0 from 9 in column 7 and get 0.
0 is the next digit of our result.

Step 8: We'll start by subtracting the digit 5 and the borrow 0 from 1 in column 8 and get -4.
We add -4 to 10 and get 6 as the next digit of the result.

Step 9: We'll start by subtracting the digit 1 and the borrow 1 from 7 in column 9 and get 5.
5 is the next digit of our result.

So, 719691516 - 159567321 = 560124195.