31159799 ÷ 821 
Let's see how many times 821 fits into 31159799.

Going ahead to step 1:
When dividing 3 by 821, we get 0 with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Fetch the next digit (1) from the dividend, attach it to 3 and continue: 31 / 821

On to step 2:
821 goes into 31 0 times with a remainder of 31.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 31 after subtracting 0 from 31.
Fetch the next digit (1) from the dividend, attach it to 31 and continue: 311 / 821

Step 3:
When dividing 311 by 821, we get 0 with a remainder of 311.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 311 and we're left with 311.
Append the next digit (5) from the dividend to 311 and continue with: 3115 / 821

Let's proceed to step 4:
821 can be fit into 3115 3 times, resulting in a remainder of 652.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Subtracting 2463 from 3115 leaves us with 652.
Include the next digit (9) from the dividend after 652, then repeat: 6529 / 821

On to step 5:
821 can be fit into 6529 7 times, resulting in a remainder of 782.
Record the quotient 7 as the next digit in the result. 
Result so far: 37.0
Subtract 5747 from 6529 to get 782.
Take the next digit (7) from the dividend and append it to 782, then repeat: 7827 / 821

Going ahead to step 6:
821 goes into 7827 9 times with a remainder of 438.
Put 9 as the next digit of the answer. 
Result so far: 379.0
If we take 7389 away from 7827, we end up with 438.
Grab the next digit (9) from the dividend, add it to 438, then carry on: 4389 / 821

Let's proceed to step 7:
4389 divided by 821 is 5 with a remainder of 284.
Write down 5 as next digit of the result. 
Result so far: 3795.0
Deduct 4105 from 4389 and we're left with 284.
Include the next digit (9) from the dividend after 284, then repeat: 2849 / 821

Moving on to step 8:
821 can be fit into 2849 3 times, resulting in a remainder of 386.
The number 3 becomes the next digit in our result. 
Result so far: 37953.0
Deduct 2463 from 2849 and we're left with 386.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3860, and continue the process.

On to step 9:
When dividing 3860 by 821, we get 4 with a remainder of 576.
Use 4 as the next digit of our solution. 
Result so far: 37953.4
Subtract 3284 from 3860 to get 576.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5760, and continue the process.

Going ahead to step 10:
5760 divided by 821 is 7 with a remainder of 13.
Put 7 as the next digit of the answer. 
Result so far: 37953.47
The remainder is 13 after subtracting 5747 from 5760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Moving on to step 11:
If we divide 130 by 821, we get 0 and a remainder of 130.
The number 0 becomes the next digit in our result. 
Result so far: 37953.47
The remainder is 130 after subtracting 0 from 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

On to step 12:
1300 divided by 821 is 1 with a remainder of 479.
Write down 1 as next digit of the result. 
Result so far: 37953.4701
The remainder is 479 after subtracting 821 from 1300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4790, and continue the process.

Going ahead to step 13:
821 can be fit into 4790 5 times, resulting in a remainder of 685.
Put 5 as the next digit of the answer. 
Result so far: 37953.47015
Subtracting 4105 from 4790 leaves us with 685.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6850, and continue the process.

On to step 14:
821 can be fit into 6850 8 times, resulting in a remainder of 282.
The next digit of our result is 8. 
Result so far: 37953.470158
If we subtract 6568 from 6850, we get 282.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2820, and continue the process.

Moving on to step 15:
821 can be fit into 2820 3 times, resulting in a remainder of 357.
Write down 3 as next digit of the result. 
Result so far: 37953.4701583
If we subtract 2463 from 2820, we get 357.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3570, and continue the process.

Moving on to step 16:
If we divide 3570 by 821, we get 4 and a remainder of 286.
Put 4 as the next digit of the answer. 
Result so far: 37953.47015834
Subtract 3284 from 3570 to get 286.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2860, and continue the process.

Our division results in 37953.47015834 with a remaining 2.86e-07.