Alright, ready to do some subtraction? We're taking 398311285 and subtracting 206194520 from it.

Step 1: We'll start by subtracting the digit 0 and the borrow 0 from 5 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 8 in column 2 and get 6.
6 is the next digit of our result.

Step 3: We'll start by subtracting the digit 5 and the borrow 0 from 2 in column 3 and get -3.
We add -3 to 10 and get 7 as the next digit of the result.

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

Step 5: We'll start by subtracting the digit 9 and the borrow 1 from 1 in column 5 and get -9.
We add -9 to 10 and get 1 as the next digit of the result.

Step 6: We'll start by subtracting the digit 1 and the borrow 1 from 3 in column 6 and get 1.
1 is the next digit of our result.

Step 7: We'll start by subtracting the digit 6 and the borrow 0 from 8 in column 7 and get 2.
2 is the next digit of our result.

Step 8: We'll start by subtracting the digit 0 and the borrow 0 from 9 in column 8 and get 9.
9 is the next digit of our result.

Step 9: We'll start by subtracting the digit 2 and the borrow 0 from 3 in column 9 and get 1.
1 is the next digit of our result.

So, 398311285 - 206194520 = 192116765.