We look at the division of 81388088 by 621 
Our goal is to divide 81388088 by 621.

Going ahead to step 1:
When dividing 8 by 621, we get 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Fetch the next digit (1) from the dividend, attach it to 8 and continue: 81 / 621

On to step 2:
The number 621 fits into 81 0 times, leaving a remainder of 81.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 81 leaves us with 81.
Append the next digit (3) from the dividend to 81 and continue with: 813 / 621

On to step 3:
The number 621 fits into 813 1 times, leaving a remainder of 192.
The next digit of our result is 1. 
Result so far: 1.0
If we take 621 away from 813, we end up with 192.
Include the next digit (8) from the dividend after 192, then repeat: 1928 / 621

Advancing to step 4:
The number 621 fits into 1928 3 times, leaving a remainder of 65.
The number 3 becomes the next digit in our result. 
Result so far: 13.0
If we take 1863 away from 1928, we end up with 65.
Include the next digit (8) from the dividend after 65, then repeat: 658 / 621

On to step 5:
When dividing 658 by 621, we get 1 with a remainder of 37.
Write down 1 as next digit of the result. 
Result so far: 131.0
Subtracting 621 from 658 leaves us with 37.
Grab the next digit (0) from the dividend, add it to 37, then carry on: 370 / 621

Going ahead to step 6:
When dividing 370 by 621, we get 0 with a remainder of 370.
Record the quotient 0 as the next digit in the result. 
Result so far: 1310.0
The remainder is 370 after subtracting 0 from 370.
Fetch the next digit (8) from the dividend, attach it to 370 and continue: 3708 / 621

On to step 7:
621 goes into 3708 5 times with a remainder of 603.
Put 5 as the next digit of the answer. 
Result so far: 13105.0
Subtract 3105 from 3708 to get 603.
Grab the next digit (8) from the dividend, add it to 603, then carry on: 6038 / 621

Advancing to step 8:
When dividing 6038 by 621, we get 9 with a remainder of 449.
Write down 9 as next digit of the result. 
Result so far: 131059.0
Deduct 5589 from 6038 and we're left with 449.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4490, and continue the process.

On to step 9:
621 can be fit into 4490 7 times, resulting in a remainder of 143.
Write down 7 as next digit of the result. 
Result so far: 131059.7
Subtracting 4347 from 4490 leaves us with 143.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1430, and continue the process.

Step 10:
1430 divided by 621 is 2 with a remainder of 188.
Record the quotient 2 as the next digit in the result. 
Result so far: 131059.72
Subtracting 1242 from 1430 leaves us with 188.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1880, and continue the process.

Step 11:
If we divide 1880 by 621, we get 3 and a remainder of 17.
The number 3 becomes the next digit in our result. 
Result so far: 131059.723
If we take 1863 away from 1880, we end up with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Advancing to step 12:
When dividing 170 by 621, we get 0 with a remainder of 170.
The next digit of our result is 0. 
Result so far: 131059.723
Deduct 0 from 170 and we're left with 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Let's proceed to step 13:
When dividing 1700 by 621, we get 2 with a remainder of 458.
The next digit of our result is 2. 
Result so far: 131059.72302
The remainder is 458 after subtracting 1242 from 1700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4580, and continue the process.

Going ahead to step 14:
The number 621 fits into 4580 7 times, leaving a remainder of 233.
Use 7 as the next digit of our solution. 
Result so far: 131059.723027
Subtracting 4347 from 4580 leaves us with 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 15:
621 can be fit into 2330 3 times, resulting in a remainder of 467.
Use 3 as the next digit of our solution. 
Result so far: 131059.7230273
If we subtract 1863 from 2330, we get 467.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4670, and continue the process.

Let's proceed to step 16:
When dividing 4670 by 621, we get 7 with a remainder of 323.
Use 7 as the next digit of our solution. 
Result so far: 131059.72302737
The remainder is 323 after subtracting 4347 from 4670.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3230, and continue the process.

Our division results in 131059.72302737 with a remaining 3.23e-07.