We're dividing 621320 by 81 
Let's see how many times 81 fits into 621320.

Step 1:
When dividing 6 by 81, we get 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Take the next digit (2) from the dividend and append it to 6, then repeat: 62 / 81

On to step 2:
If we divide 62 by 81, we get 0 and a remainder of 62.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 62 and we're left with 62.
Bring next digit (1) of the dividend behind the 62 and repeat the process: 621 / 81

Moving on to step 3:
81 can be fit into 621 7 times, resulting in a remainder of 54.
Use 7 as the next digit of our solution. 
Result so far: 7.0
The remainder is 54 after subtracting 567 from 621.
Fetch the next digit (3) from the dividend, attach it to 54 and continue: 543 / 81

On to step 4:
When dividing 543 by 81, we get 6 with a remainder of 57.
Record the quotient 6 as the next digit in the result. 
Result so far: 76.0
If we take 486 away from 543, we end up with 57.
Take the next digit (2) from the dividend and append it to 57, then repeat: 572 / 81

Advancing to step 5:
If we divide 572 by 81, we get 7 and a remainder of 5.
The number 7 becomes the next digit in our result. 
Result so far: 767.0
The remainder is 5 after subtracting 567 from 572.
Grab the next digit (0) from the dividend, add it to 5, then carry on: 50 / 81

Going ahead to step 6:
50 divided by 81 is 0 with a remainder of 50.
The number 0 becomes the next digit in our result. 
Result so far: 7670.0
If we subtract 0 from 50, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Let's proceed to step 7:
81 can be fit into 500 6 times, resulting in a remainder of 14.
The next digit of our result is 6. 
Result so far: 7670.6
Subtract 486 from 500 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Let's proceed to step 8:
81 goes into 140 1 times with a remainder of 59.
The next digit of our result is 1. 
Result so far: 7670.61
If we subtract 81 from 140, we get 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Step 9:
If we divide 590 by 81, we get 7 and a remainder of 23.
Write down 7 as next digit of the result. 
Result so far: 7670.617
The remainder is 23 after subtracting 567 from 590.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Moving on to step 10:
81 can be fit into 230 2 times, resulting in a remainder of 68.
Record the quotient 2 as the next digit in the result. 
Result so far: 7670.6172
The remainder is 68 after subtracting 162 from 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Moving on to step 11:
680 divided by 81 is 8 with a remainder of 32.
Use 8 as the next digit of our solution. 
Result so far: 7670.61728
If we take 648 away from 680, we end up with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Advancing to step 12:
81 can be fit into 320 3 times, resulting in a remainder of 77.
The next digit of our result is 3. 
Result so far: 7670.617283
If we take 243 away from 320, we end up with 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

On to step 13:
When dividing 770 by 81, we get 9 with a remainder of 41.
Put 9 as the next digit of the answer. 
Result so far: 7670.6172839
If we take 729 away from 770, we end up with 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

On to step 14:
410 divided by 81 is 5 with a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 7670.61728395
Deduct 405 from 410 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Our division results in 7670.61728395 with a remaining 5e-09.