81990701 ÷ 857 
We want to divide 81990701 by 857.

Step 1:
If we divide 8 by 857, we get 0 and a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Grab the next digit (1) from the dividend, add it to 8, then carry on: 81 / 857

Let's proceed to step 2:
857 goes into 81 0 times with a remainder of 81.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 81 and we're left with 81.
Include the next digit (9) from the dividend after 81, then repeat: 819 / 857

Going ahead to step 3:
The number 857 fits into 819 0 times, leaving a remainder of 819.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 819, we end up with 819.
Grab the next digit (9) from the dividend, add it to 819, then carry on: 8199 / 857

Let's proceed to step 4:
8199 divided by 857 is 9 with a remainder of 486.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
The remainder is 486 after subtracting 7713 from 8199.
Append the next digit (0) from the dividend to 486 and continue with: 4860 / 857

Step 5:
When dividing 4860 by 857, we get 5 with a remainder of 575.
Record the quotient 5 as the next digit in the result. 
Result so far: 95.0
Deduct 4285 from 4860 and we're left with 575.
Take the next digit (7) from the dividend and append it to 575, then repeat: 5757 / 857

Let's proceed to step 6:
857 can be fit into 5757 6 times, resulting in a remainder of 615.
Record the quotient 6 as the next digit in the result. 
Result so far: 956.0
If we subtract 5142 from 5757, we get 615.
Bring next digit (0) of the dividend behind the 615 and repeat the process: 6150 / 857

Advancing to step 7:
When dividing 6150 by 857, we get 7 with a remainder of 151.
Record the quotient 7 as the next digit in the result. 
Result so far: 9567.0
If we subtract 5999 from 6150, we get 151.
Append the next digit (1) from the dividend to 151 and continue with: 1511 / 857

Advancing to step 8:
857 can be fit into 1511 1 times, resulting in a remainder of 654.
Use 1 as the next digit of our solution. 
Result so far: 95671.0
Subtracting 857 from 1511 leaves us with 654.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6540, and continue the process.

Let's proceed to step 9:
6540 divided by 857 is 7 with a remainder of 541.
Use 7 as the next digit of our solution. 
Result so far: 95671.7
The remainder is 541 after subtracting 5999 from 6540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5410, and continue the process.

On to step 10:
5410 divided by 857 is 6 with a remainder of 268.
Use 6 as the next digit of our solution. 
Result so far: 95671.76
Deduct 5142 from 5410 and we're left with 268.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2680, and continue the process.

On to step 11:
857 can be fit into 2680 3 times, resulting in a remainder of 109.
Put 3 as the next digit of the answer. 
Result so far: 95671.763
If we subtract 2571 from 2680, we get 109.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1090, and continue the process.

Step 12:
The number 857 fits into 1090 1 times, leaving a remainder of 233.
Put 1 as the next digit of the answer. 
Result so far: 95671.7631
Subtract 857 from 1090 to get 233.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2330, and continue the process.

Advancing to step 13:
The number 857 fits into 2330 2 times, leaving a remainder of 616.
The next digit of our result is 2. 
Result so far: 95671.76312
Subtract 1714 from 2330 to get 616.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6160, and continue the process.

Let's proceed to step 14:
When dividing 6160 by 857, we get 7 with a remainder of 161.
The next digit of our result is 7. 
Result so far: 95671.763127
If we take 5999 away from 6160, we end up with 161.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1610, and continue the process.

Moving on to step 15:
857 goes into 1610 1 times with a remainder of 753.
The number 1 becomes the next digit in our result. 
Result so far: 95671.7631271
If we subtract 857 from 1610, we get 753.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7530, and continue the process.

Moving on to step 16:
When dividing 7530 by 857, we get 8 with a remainder of 674.
The number 8 becomes the next digit in our result. 
Result so far: 95671.76312718
If we take 6856 away from 7530, we end up with 674.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6740, and continue the process.

The final result is 95671.76312718 with a remainder of 6.74e-07.