81684722 divided by 451 
We want to divide 81684722 by 451.

Moving on to step 1:
451 can be fit into 8 0 times, resulting in a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Grab the next digit (1) from the dividend, add it to 8, then carry on: 81 / 451

Let's proceed to step 2:
When dividing 81 by 451, we get 0 with a remainder of 81.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 81, we end up with 81.
Include the next digit (6) from the dividend after 81, then repeat: 816 / 451

Advancing to step 3:
When dividing 816 by 451, we get 1 with a remainder of 365.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 451 from 816 and we're left with 365.
Take the next digit (8) from the dividend and append it to 365, then repeat: 3658 / 451

On to step 4:
When dividing 3658 by 451, we get 8 with a remainder of 50.
The next digit of our result is 8. 
Result so far: 18.0
If we subtract 3608 from 3658, we get 50.
Bring next digit (4) of the dividend behind the 50 and repeat the process: 504 / 451

Going ahead to step 5:
451 can be fit into 504 1 times, resulting in a remainder of 53.
Use 1 as the next digit of our solution. 
Result so far: 181.0
The remainder is 53 after subtracting 451 from 504.
Take the next digit (7) from the dividend and append it to 53, then repeat: 537 / 451

Going ahead to step 6:
451 goes into 537 1 times with a remainder of 86.
Use 1 as the next digit of our solution. 
Result so far: 1811.0
If we subtract 451 from 537, we get 86.
Include the next digit (2) from the dividend after 86, then repeat: 862 / 451

On to step 7:
451 goes into 862 1 times with a remainder of 411.
The number 1 becomes the next digit in our result. 
Result so far: 18111.0
Subtract 451 from 862 to get 411.
Grab the next digit (2) from the dividend, add it to 411, then carry on: 4112 / 451

On to step 8:
If we divide 4112 by 451, we get 9 and a remainder of 53.
Put 9 as the next digit of the answer. 
Result so far: 181119.0
Deduct 4059 from 4112 and we're left with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Advancing to step 9:
451 can be fit into 530 1 times, resulting in a remainder of 79.
Put 1 as the next digit of the answer. 
Result so far: 181119.1
Subtract 451 from 530 to get 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Advancing to step 10:
If we divide 790 by 451, we get 1 and a remainder of 339.
The number 1 becomes the next digit in our result. 
Result so far: 181119.11
If we take 451 away from 790, we end up with 339.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3390, and continue the process.

The final result is 181119.11 with a remainder of 0.339.