Got it! So, we have 500552902 and 197724092, and we'll subtract the latter from the former.

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

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

Step 3: We'll start by subtracting the digit 0 and the borrow 1 from 9 in column 3 and get 8.
8 is the next digit of our result.

Step 4: We'll start by subtracting the digit 4 and the borrow 0 from 2 in column 4 and get -2.
We add -2 to 10 and get 8 as the next digit of the result.

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

Step 6: We'll start by subtracting the digit 7 and the borrow 0 from 5 in column 6 and get -2.
We add -2 to 10 and get 8 as the next digit of the result.

Step 7: We'll start by subtracting the digit 7 and the borrow 1 from 0 in column 7 and get -8.
We add -8 to 10 and get 2 as the next digit of the result.

Step 8: We'll start by subtracting the digit 9 and the borrow 1 from 0 in column 8 and get -10.
We add -10 to 10 and get 0 as the next digit of the result.

Step 9: We'll start by subtracting the digit 1 and the borrow 1 from 5 in column 9 and get 3.
3 is the next digit of our result.

So, 500552902 - 197724092 = 302828810.