80523401 ÷ 111 
Our goal is to divide 80523401 by 111.

Moving on to step 1:
8 divided by 111 is 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Grab the next digit (0) from the dividend, add it to 8, then carry on: 80 / 111

Advancing to step 2:
111 can be fit into 80 0 times, resulting in a remainder of 80.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 80, we get 80.
Include the next digit (5) from the dividend after 80, then repeat: 805 / 111

On to step 3:
111 goes into 805 7 times with a remainder of 28.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
Subtracting 777 from 805 leaves us with 28.
Take the next digit (2) from the dividend and append it to 28, then repeat: 282 / 111

Let's proceed to step 4:
282 divided by 111 is 2 with a remainder of 60.
Record the quotient 2 as the next digit in the result. 
Result so far: 72.0
Subtract 222 from 282 to get 60.
Bring next digit (3) of the dividend behind the 60 and repeat the process: 603 / 111

On to step 5:
111 goes into 603 5 times with a remainder of 48.
Use 5 as the next digit of our solution. 
Result so far: 725.0
Deduct 555 from 603 and we're left with 48.
Fetch the next digit (4) from the dividend, attach it to 48 and continue: 484 / 111

Advancing to step 6:
When dividing 484 by 111, we get 4 with a remainder of 40.
The number 4 becomes the next digit in our result. 
Result so far: 7254.0
The remainder is 40 after subtracting 444 from 484.
Include the next digit (0) from the dividend after 40, then repeat: 400 / 111

Going ahead to step 7:
If we divide 400 by 111, we get 3 and a remainder of 67.
Use 3 as the next digit of our solution. 
Result so far: 72543.0
Subtract 333 from 400 to get 67.
Append the next digit (1) from the dividend to 67 and continue with: 671 / 111

Advancing to step 8:
The number 111 fits into 671 6 times, leaving a remainder of 5.
The number 6 becomes the next digit in our result. 
Result so far: 725436.0
Deduct 666 from 671 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 9:
111 can be fit into 50 0 times, resulting in a remainder of 50.
The next digit of our result is 0. 
Result so far: 725436.0
The remainder is 50 after subtracting 0 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Step 10:
When dividing 500 by 111, we get 4 with a remainder of 56.
Write down 4 as next digit of the result. 
Result so far: 725436.04
Deduct 444 from 500 and we're left with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

On to step 11:
The number 111 fits into 560 5 times, leaving a remainder of 5.
The next digit of our result is 5. 
Result so far: 725436.045
If we take 555 away from 560, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 12:
50 divided by 111 is 0 with a remainder of 50.
The next digit of our result is 0. 
Result so far: 725436.045
Subtracting 0 from 50 leaves us with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Moving on to step 13:
111 can be fit into 500 4 times, resulting in a remainder of 56.
The next digit of our result is 4. 
Result so far: 725436.04504
If we subtract 444 from 500, we get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Going ahead to step 14:
When dividing 560 by 111, we get 5 with a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 725436.045045
Subtract 555 from 560 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 15:
50 divided by 111 is 0 with a remainder of 50.
Use 0 as the next digit of our solution. 
Result so far: 725436.045045
The remainder is 50 after subtracting 0 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Moving on to step 16:
111 goes into 500 4 times with a remainder of 56.
The number 4 becomes the next digit in our result. 
Result so far: 725436.04504504
If we subtract 444 from 500, we get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

After the division, we end up with 725436.04504504 and a remainder of 5.6e-08.