7986462 divided by 621 
Our goal is to divide 7986462 by 621.

Step 1:
When dividing 7 by 621, we get 0 with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Include the next digit (9) from the dividend after 7, then repeat: 79 / 621

Going ahead to step 2:
If we divide 79 by 621, we get 0 and a remainder of 79.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 79 leaves us with 79.
Fetch the next digit (8) from the dividend, attach it to 79 and continue: 798 / 621

Going ahead to step 3:
621 goes into 798 1 times with a remainder of 177.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 621 from 798, we get 177.
Include the next digit (6) from the dividend after 177, then repeat: 1776 / 621

Advancing to step 4:
When dividing 1776 by 621, we get 2 with a remainder of 534.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
The remainder is 534 after subtracting 1242 from 1776.
Take the next digit (4) from the dividend and append it to 534, then repeat: 5344 / 621

On to step 5:
5344 divided by 621 is 8 with a remainder of 376.
Write down 8 as next digit of the result. 
Result so far: 128.0
Subtract 4968 from 5344 to get 376.
Append the next digit (6) from the dividend to 376 and continue with: 3766 / 621

Going ahead to step 6:
621 goes into 3766 6 times with a remainder of 40.
Record the quotient 6 as the next digit in the result. 
Result so far: 1286.0
If we subtract 3726 from 3766, we get 40.
Append the next digit (2) from the dividend to 40 and continue with: 402 / 621

Let's proceed to step 7:
If we divide 402 by 621, we get 0 and a remainder of 402.
The number 0 becomes the next digit in our result. 
Result so far: 12860.0
Deduct 0 from 402 and we're left with 402.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4020, and continue the process.

Advancing to step 8:
621 goes into 4020 6 times with a remainder of 294.
Use 6 as the next digit of our solution. 
Result so far: 12860.6
Deduct 3726 from 4020 and we're left with 294.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2940, and continue the process.

On to step 9:
When dividing 2940 by 621, we get 4 with a remainder of 456.
The next digit of our result is 4. 
Result so far: 12860.64
If we take 2484 away from 2940, we end up with 456.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4560, and continue the process.

Moving on to step 10:
4560 divided by 621 is 7 with a remainder of 213.
The next digit of our result is 7. 
Result so far: 12860.647
If we subtract 4347 from 4560, we get 213.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2130, and continue the process.

Going ahead to step 11:
621 can be fit into 2130 3 times, resulting in a remainder of 267.
Use 3 as the next digit of our solution. 
Result so far: 12860.6473
Deduct 1863 from 2130 and we're left with 267.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2670, and continue the process.

Going ahead to step 12:
When dividing 2670 by 621, we get 4 with a remainder of 186.
Record the quotient 4 as the next digit in the result. 
Result so far: 12860.64734
Deduct 2484 from 2670 and we're left with 186.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1860, and continue the process.

Let's proceed to step 13:
1860 divided by 621 is 2 with a remainder of 618.
Record the quotient 2 as the next digit in the result. 
Result so far: 12860.647342
Subtracting 1242 from 1860 leaves us with 618.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6180, and continue the process.

On to step 14:
621 can be fit into 6180 9 times, resulting in a remainder of 591.
Put 9 as the next digit of the answer. 
Result so far: 12860.6473429
Deduct 5589 from 6180 and we're left with 591.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5910, and continue the process.

On to step 15:
5910 divided by 621 is 9 with a remainder of 321.
Put 9 as the next digit of the answer. 
Result so far: 12860.64734299
Subtracting 5589 from 5910 leaves us with 321.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3210, and continue the process.

The final result is 12860.64734299 with a remainder of 3.21e-07.