We look at the division of 81783097 by 421 
Let's see how many times 421 fits into 81783097.

Advancing to step 1:
If we divide 8 by 421, we get 0 and a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Fetch the next digit (1) from the dividend, attach it to 8 and continue: 81 / 421

On to step 2:
The number 421 fits into 81 0 times, leaving a remainder of 81.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 81 leaves us with 81.
Grab the next digit (7) from the dividend, add it to 81, then carry on: 817 / 421

Advancing to step 3:
421 can be fit into 817 1 times, resulting in a remainder of 396.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 421 from 817 and we're left with 396.
Fetch the next digit (8) from the dividend, attach it to 396 and continue: 3968 / 421

Going ahead to step 4:
421 can be fit into 3968 9 times, resulting in a remainder of 179.
Write down 9 as next digit of the result. 
Result so far: 19.0
If we subtract 3789 from 3968, we get 179.
Take the next digit (3) from the dividend and append it to 179, then repeat: 1793 / 421

Going ahead to step 5:
421 can be fit into 1793 4 times, resulting in a remainder of 109.
Record the quotient 4 as the next digit in the result. 
Result so far: 194.0
If we take 1684 away from 1793, we end up with 109.
Bring next digit (0) of the dividend behind the 109 and repeat the process: 1090 / 421

Advancing to step 6:
421 goes into 1090 2 times with a remainder of 248.
The next digit of our result is 2. 
Result so far: 1942.0
Subtract 842 from 1090 to get 248.
Append the next digit (9) from the dividend to 248 and continue with: 2489 / 421

On to step 7:
2489 divided by 421 is 5 with a remainder of 384.
The number 5 becomes the next digit in our result. 
Result so far: 19425.0
Subtracting 2105 from 2489 leaves us with 384.
Fetch the next digit (7) from the dividend, attach it to 384 and continue: 3847 / 421

On to step 8:
421 goes into 3847 9 times with a remainder of 58.
The next digit of our result is 9. 
Result so far: 194259.0
Subtracting 3789 from 3847 leaves us with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Going ahead to step 9:
421 can be fit into 580 1 times, resulting in a remainder of 159.
The next digit of our result is 1. 
Result so far: 194259.1
Subtracting 421 from 580 leaves us with 159.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1590, and continue the process.

Step 10:
The number 421 fits into 1590 3 times, leaving a remainder of 327.
Record the quotient 3 as the next digit in the result. 
Result so far: 194259.13
If we take 1263 away from 1590, we end up with 327.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3270, and continue the process.

Let's proceed to step 11:
3270 divided by 421 is 7 with a remainder of 323.
Use 7 as the next digit of our solution. 
Result so far: 194259.137
If we take 2947 away from 3270, we end up with 323.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3230, and continue the process.

On to step 12:
421 can be fit into 3230 7 times, resulting in a remainder of 283.
The number 7 becomes the next digit in our result. 
Result so far: 194259.1377
If we subtract 2947 from 3230, we get 283.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2830, and continue the process.

Our division results in 194259.1377 with a remaining 0.00283.