We look at the division of 81872231 by 409 
Our goal is to divide 81872231 by 409.

Advancing to step 1:
If we divide 8 by 409, we get 0 and a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Fetch the next digit (1) from the dividend, attach it to 8 and continue: 81 / 409

Moving on to step 2:
The number 409 fits into 81 0 times, leaving a remainder of 81.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 81 and we're left with 81.
Include the next digit (8) from the dividend after 81, then repeat: 818 / 409

Going ahead to step 3:
When dividing 818 by 409, we get 2 with a remainder of 0.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
The remainder is 0 after subtracting 818 from 818.
Fetch the next digit (7) from the dividend, attach it to 0 and continue: 7 / 409

Step 4:
If we divide 7 by 409, we get 0 and a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 20.0
Subtract 0 from 7 to get 7.
Bring next digit (2) of the dividend behind the 7 and repeat the process: 72 / 409

Let's proceed to step 5:
The number 409 fits into 72 0 times, leaving a remainder of 72.
The number 0 becomes the next digit in our result. 
Result so far: 200.0
Subtracting 0 from 72 leaves us with 72.
Bring next digit (2) of the dividend behind the 72 and repeat the process: 722 / 409

Let's proceed to step 6:
409 goes into 722 1 times with a remainder of 313.
Put 1 as the next digit of the answer. 
Result so far: 2001.0
If we subtract 409 from 722, we get 313.
Bring next digit (3) of the dividend behind the 313 and repeat the process: 3133 / 409

On to step 7:
The number 409 fits into 3133 7 times, leaving a remainder of 270.
Use 7 as the next digit of our solution. 
Result so far: 20017.0
If we subtract 2863 from 3133, we get 270.
Fetch the next digit (1) from the dividend, attach it to 270 and continue: 2701 / 409

Let's proceed to step 8:
If we divide 2701 by 409, we get 6 and a remainder of 247.
Use 6 as the next digit of our solution. 
Result so far: 200176.0
The remainder is 247 after subtracting 2454 from 2701.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2470, and continue the process.

Let's proceed to step 9:
If we divide 2470 by 409, we get 6 and a remainder of 16.
Write down 6 as next digit of the result. 
Result so far: 200176.6
Subtracting 2454 from 2470 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 10:
When dividing 160 by 409, we get 0 with a remainder of 160.
Write down 0 as next digit of the result. 
Result so far: 200176.6
If we take 0 away from 160, we end up with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Step 11:
409 goes into 1600 3 times with a remainder of 373.
Write down 3 as next digit of the result. 
Result so far: 200176.603
Deduct 1227 from 1600 and we're left with 373.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3730, and continue the process.

Going ahead to step 12:
3730 divided by 409 is 9 with a remainder of 49.
The number 9 becomes the next digit in our result. 
Result so far: 200176.6039
Subtracting 3681 from 3730 leaves us with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Moving on to step 13:
490 divided by 409 is 1 with a remainder of 81.
Write down 1 as next digit of the result. 
Result so far: 200176.60391
Deduct 409 from 490 and we're left with 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

Let's proceed to step 14:
When dividing 810 by 409, we get 1 with a remainder of 401.
The next digit of our result is 1. 
Result so far: 200176.603911
Subtracting 409 from 810 leaves us with 401.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4010, and continue the process.

The final outcome is 200176.603911, with a leftover of 4.01e-05.