We divide 81541908 by 644
Our goal is to divide 81541908 by 644.

Let's proceed to step 1:
The number 644 fits into 8 0 times, leaving a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Fetch the next digit (1) from the dividend, attach it to 8 and continue: 81 / 644

Step 2:
The number 644 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.
Bring next digit (5) of the dividend behind the 81 and repeat the process: 815 / 644

Step 3:
644 can be fit into 815 1 times, resulting in a remainder of 171.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 644 from 815 leaves us with 171.
Grab the next digit (4) from the dividend, add it to 171, then carry on: 1714 / 644

Step 4:
644 goes into 1714 2 times with a remainder of 426.
The next digit of our result is 2. 
Result so far: 12.0
The remainder is 426 after subtracting 1288 from 1714.
Include the next digit (1) from the dividend after 426, then repeat: 4261 / 644

On to step 5:
644 goes into 4261 6 times with a remainder of 397.
The next digit of our result is 6. 
Result so far: 126.0
Subtract 3864 from 4261 to get 397.
Append the next digit (9) from the dividend to 397 and continue with: 3979 / 644

Step 6:
The number 644 fits into 3979 6 times, leaving a remainder of 115.
The next digit of our result is 6. 
Result so far: 1266.0
Deduct 3864 from 3979 and we're left with 115.
Take the next digit (0) from the dividend and append it to 115, then repeat: 1150 / 644

Going ahead to step 7:
644 goes into 1150 1 times with a remainder of 506.
Write down 1 as next digit of the result. 
Result so far: 12661.0
Subtract 644 from 1150 to get 506.
Take the next digit (8) from the dividend and append it to 506, then repeat: 5068 / 644

Advancing to step 8:
644 goes into 5068 7 times with a remainder of 560.
Put 7 as the next digit of the answer. 
Result so far: 126617.0
Subtracting 4508 from 5068 leaves us with 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

Going ahead to step 9:
5600 divided by 644 is 8 with a remainder of 448.
Put 8 as the next digit of the answer. 
Result so far: 126617.8
Subtracting 5152 from 5600 leaves us with 448.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4480, and continue the process.

Moving on to step 10:
4480 divided by 644 is 6 with a remainder of 616.
Record the quotient 6 as the next digit in the result. 
Result so far: 126617.86
Deduct 3864 from 4480 and we're left with 616.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6160, and continue the process.

Advancing to step 11:
644 can be fit into 6160 9 times, resulting in a remainder of 364.
The next digit of our result is 9. 
Result so far: 126617.869
If we subtract 5796 from 6160, we get 364.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3640, and continue the process.

Advancing to step 12:
644 can be fit into 3640 5 times, resulting in a remainder of 420.
Put 5 as the next digit of the answer. 
Result so far: 126617.8695
The remainder is 420 after subtracting 3220 from 3640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

Step 13:
If we divide 4200 by 644, we get 6 and a remainder of 336.
Record the quotient 6 as the next digit in the result. 
Result so far: 126617.86956
Subtract 3864 from 4200 to get 336.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3360, and continue the process.

Moving on to step 14:
644 goes into 3360 5 times with a remainder of 140.
Write down 5 as next digit of the result. 
Result so far: 126617.869565
If we subtract 3220 from 3360, we get 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Moving on to step 15:
If we divide 1400 by 644, we get 2 and a remainder of 112.
Put 2 as the next digit of the answer. 
Result so far: 126617.8695652
If we subtract 1288 from 1400, we get 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

On to step 16:
The number 644 fits into 1120 1 times, leaving a remainder of 476.
Use 1 as the next digit of our solution. 
Result so far: 126617.86956521
Subtract 644 from 1120 to get 476.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4760, and continue the process.

Our division results in 126617.86956521 with a remaining 4.76e-07.