39173815 ÷ 821 
Our goal is to divide 39173815 by 821.

Advancing to step 1:
821 can be fit into 3 0 times, resulting in a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 821

Going ahead to step 2:
39 divided by 821 is 0 with a remainder of 39.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 39 leaves us with 39.
Append the next digit (1) from the dividend to 39 and continue with: 391 / 821

Advancing to step 3:
821 can be fit into 391 0 times, resulting in a remainder of 391.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 391 after subtracting 0 from 391.
Include the next digit (7) from the dividend after 391, then repeat: 3917 / 821

On to step 4:
821 can be fit into 3917 4 times, resulting in a remainder of 633.
The next digit of our result is 4. 
Result so far: 4.0
Subtracting 3284 from 3917 leaves us with 633.
Grab the next digit (3) from the dividend, add it to 633, then carry on: 6333 / 821

Advancing to step 5:
The number 821 fits into 6333 7 times, leaving a remainder of 586.
Use 7 as the next digit of our solution. 
Result so far: 47.0
The remainder is 586 after subtracting 5747 from 6333.
Take the next digit (8) from the dividend and append it to 586, then repeat: 5868 / 821

Let's proceed to step 6:
821 goes into 5868 7 times with a remainder of 121.
Put 7 as the next digit of the answer. 
Result so far: 477.0
If we take 5747 away from 5868, we end up with 121.
Take the next digit (1) from the dividend and append it to 121, then repeat: 1211 / 821

Moving on to step 7:
If we divide 1211 by 821, we get 1 and a remainder of 390.
The number 1 becomes the next digit in our result. 
Result so far: 4771.0
Subtract 821 from 1211 to get 390.
Append the next digit (5) from the dividend to 390 and continue with: 3905 / 821

Moving on to step 8:
821 goes into 3905 4 times with a remainder of 621.
Put 4 as the next digit of the answer. 
Result so far: 47714.0
Deduct 3284 from 3905 and we're left with 621.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6210, and continue the process.

Step 9:
821 goes into 6210 7 times with a remainder of 463.
The number 7 becomes the next digit in our result. 
Result so far: 47714.7
Deduct 5747 from 6210 and we're left with 463.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4630, and continue the process.

Moving on to step 10:
When dividing 4630 by 821, we get 5 with a remainder of 525.
Write down 5 as next digit of the result. 
Result so far: 47714.75
Subtracting 4105 from 4630 leaves us with 525.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5250, and continue the process.

Going ahead to step 11:
5250 divided by 821 is 6 with a remainder of 324.
Write down 6 as next digit of the result. 
Result so far: 47714.756
The remainder is 324 after subtracting 4926 from 5250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3240, and continue the process.

Going ahead to step 12:
821 goes into 3240 3 times with a remainder of 777.
Put 3 as the next digit of the answer. 
Result so far: 47714.7563
The remainder is 777 after subtracting 2463 from 3240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7770, and continue the process.

Moving on to step 13:
821 can be fit into 7770 9 times, resulting in a remainder of 381.
The number 9 becomes the next digit in our result. 
Result so far: 47714.75639
Deduct 7389 from 7770 and we're left with 381.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3810, and continue the process.

Advancing to step 14:
3810 divided by 821 is 4 with a remainder of 526.
The number 4 becomes the next digit in our result. 
Result so far: 47714.756394
The remainder is 526 after subtracting 3284 from 3810.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5260, and continue the process.

Let's proceed to step 15:
821 can be fit into 5260 6 times, resulting in a remainder of 334.
The next digit of our result is 6. 
Result so far: 47714.7563946
Deduct 4926 from 5260 and we're left with 334.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3340, and continue the process.

Going ahead to step 16:
When dividing 3340 by 821, we get 4 with a remainder of 56.
The next digit of our result is 4. 
Result so far: 47714.75639464
Subtracting 3284 from 3340 leaves us with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

The final result is 47714.75639464 with a remainder of 5.6e-08.