Let's divide 86200806 by 621
The aim is to understand the frequency of 621 in 86200806.

Going ahead to step 1:
621 goes into 8 0 times with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Take the next digit (6) from the dividend and append it to 8, then repeat: 86 / 621

Let's proceed to step 2:
86 divided by 621 is 0 with a remainder of 86.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 86 to get 86.
Include the next digit (2) from the dividend after 86, then repeat: 862 / 621

Going ahead to step 3:
When dividing 862 by 621, we get 1 with a remainder of 241.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 621 away from 862, we end up with 241.
Append the next digit (0) from the dividend to 241 and continue with: 2410 / 621

Let's proceed to step 4:
621 can be fit into 2410 3 times, resulting in a remainder of 547.
The next digit of our result is 3. 
Result so far: 13.0
Deduct 1863 from 2410 and we're left with 547.
Grab the next digit (0) from the dividend, add it to 547, then carry on: 5470 / 621

Step 5:
5470 divided by 621 is 8 with a remainder of 502.
Use 8 as the next digit of our solution. 
Result so far: 138.0
If we subtract 4968 from 5470, we get 502.
Append the next digit (8) from the dividend to 502 and continue with: 5028 / 621

On to step 6:
The number 621 fits into 5028 8 times, leaving a remainder of 60.
The number 8 becomes the next digit in our result. 
Result so far: 1388.0
The remainder is 60 after subtracting 4968 from 5028.
Grab the next digit (0) from the dividend, add it to 60, then carry on: 600 / 621

Moving on to step 7:
If we divide 600 by 621, we get 0 and a remainder of 600.
Use 0 as the next digit of our solution. 
Result so far: 13880.0
If we take 0 away from 600, we end up with 600.
Take the next digit (6) from the dividend and append it to 600, then repeat: 6006 / 621

Moving on to step 8:
6006 divided by 621 is 9 with a remainder of 417.
Use 9 as the next digit of our solution. 
Result so far: 138809.0
Deduct 5589 from 6006 and we're left with 417.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4170, and continue the process.

Advancing to step 9:
621 can be fit into 4170 6 times, resulting in a remainder of 444.
Put 6 as the next digit of the answer. 
Result so far: 138809.6
Subtracting 3726 from 4170 leaves us with 444.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4440, and continue the process.

Moving on to step 10:
When dividing 4440 by 621, we get 7 with a remainder of 93.
Use 7 as the next digit of our solution. 
Result so far: 138809.67
If we subtract 4347 from 4440, we get 93.
Since there are no more digits in the dividend, we add a zero to the remainder making it 930, and continue the process.

Let's proceed to step 11:
When dividing 930 by 621, we get 1 with a remainder of 309.
The next digit of our result is 1. 
Result so far: 138809.671
Subtract 621 from 930 to get 309.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3090, and continue the process.

Advancing to step 12:
If we divide 3090 by 621, we get 4 and a remainder of 606.
The number 4 becomes the next digit in our result. 
Result so far: 138809.6714
The remainder is 606 after subtracting 2484 from 3090.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6060, and continue the process.

Let's proceed to step 13:
When dividing 6060 by 621, we get 9 with a remainder of 471.
Put 9 as the next digit of the answer. 
Result so far: 138809.67149
Subtract 5589 from 6060 to get 471.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4710, and continue the process.

Going ahead to step 14:
621 can be fit into 4710 7 times, resulting in a remainder of 363.
Record the quotient 7 as the next digit in the result. 
Result so far: 138809.671497
If we take 4347 away from 4710, we end up with 363.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3630, and continue the process.

Let's proceed to step 15:
The number 621 fits into 3630 5 times, leaving a remainder of 525.
Write down 5 as next digit of the result. 
Result so far: 138809.6714975
Deduct 3105 from 3630 and we're left 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.

Moving on to step 16:
621 can be fit into 5250 8 times, resulting in a remainder of 282.
Write down 8 as next digit of the result. 
Result so far: 138809.67149758
Deduct 4968 from 5250 and we're left with 282.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2820, and continue the process.

The final outcome is 138809.67149758, with a leftover of 2.82e-07.