71661313 ÷ 866 
We want to divide 71661313 by 866.

Advancing to step 1:
If we divide 7 by 866, we get 0 and a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Fetch the next digit (1) from the dividend, attach it to 7 and continue: 71 / 866

On to step 2:
If we divide 71 by 866, we get 0 and a remainder of 71.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 71, we end up with 71.
Take the next digit (6) from the dividend and append it to 71, then repeat: 716 / 866

Advancing to step 3:
If we divide 716 by 866, we get 0 and a remainder of 716.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 716, we get 716.
Bring next digit (6) of the dividend behind the 716 and repeat the process: 7166 / 866

On to step 4:
866 can be fit into 7166 8 times, resulting in a remainder of 238.
Write down 8 as next digit of the result. 
Result so far: 8.0
The remainder is 238 after subtracting 6928 from 7166.
Append the next digit (1) from the dividend to 238 and continue with: 2381 / 866

Moving on to step 5:
The number 866 fits into 2381 2 times, leaving a remainder of 649.
Record the quotient 2 as the next digit in the result. 
Result so far: 82.0
Deduct 1732 from 2381 and we're left with 649.
Grab the next digit (3) from the dividend, add it to 649, then carry on: 6493 / 866

Advancing to step 6:
6493 divided by 866 is 7 with a remainder of 431.
Put 7 as the next digit of the answer. 
Result so far: 827.0
Deduct 6062 from 6493 and we're left with 431.
Take the next digit (1) from the dividend and append it to 431, then repeat: 4311 / 866

Going ahead to step 7:
4311 divided by 866 is 4 with a remainder of 847.
Record the quotient 4 as the next digit in the result. 
Result so far: 8274.0
If we take 3464 away from 4311, we end up with 847.
Grab the next digit (3) from the dividend, add it to 847, then carry on: 8473 / 866

On to step 8:
The number 866 fits into 8473 9 times, leaving a remainder of 679.
Record the quotient 9 as the next digit in the result. 
Result so far: 82749.0
The remainder is 679 after subtracting 7794 from 8473.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6790, and continue the process.

Advancing to step 9:
866 can be fit into 6790 7 times, resulting in a remainder of 728.
The next digit of our result is 7. 
Result so far: 82749.7
Subtracting 6062 from 6790 leaves us with 728.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7280, and continue the process.

Let's proceed to step 10:
When dividing 7280 by 866, we get 8 with a remainder of 352.
Use 8 as the next digit of our solution. 
Result so far: 82749.78
The remainder is 352 after subtracting 6928 from 7280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3520, and continue the process.

On to step 11:
If we divide 3520 by 866, we get 4 and a remainder of 56.
Record the quotient 4 as the next digit in the result. 
Result so far: 82749.784
The remainder is 56 after subtracting 3464 from 3520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Let's proceed to step 12:
If we divide 560 by 866, we get 0 and a remainder of 560.
Use 0 as the next digit of our solution. 
Result so far: 82749.784
Subtracting 0 from 560 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.

On to step 13:
The number 866 fits into 5600 6 times, leaving a remainder of 404.
Use 6 as the next digit of our solution. 
Result so far: 82749.78406
Subtract 5196 from 5600 to get 404.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4040, and continue the process.

Moving on to step 14:
866 can be fit into 4040 4 times, resulting in a remainder of 576.
Write down 4 as next digit of the result. 
Result so far: 82749.784064
The remainder is 576 after subtracting 3464 from 4040.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5760, and continue the process.

Let's proceed to step 15:
If we divide 5760 by 866, we get 6 and a remainder of 564.
The number 6 becomes the next digit in our result. 
Result so far: 82749.7840646
Subtracting 5196 from 5760 leaves us with 564.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5640, and continue the process.

Let's proceed to step 16:
When dividing 5640 by 866, we get 6 with a remainder of 444.
Put 6 as the next digit of the answer. 
Result so far: 82749.78406466
Deduct 5196 from 5640 and we're left with 444.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4440, and continue the process.

After the division, we end up with 82749.78406466 and a remainder of 4.44e-07.