Let's divide 8710737 by 621
The aim is to understand the frequency of 621 in 8710737.

Step 1:
The number 621 fits into 8 0 times, leaving a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Take the next digit (7) from the dividend and append it to 8, then repeat: 87 / 621

Let's proceed to step 2:
When dividing 87 by 621, we get 0 with a remainder of 87.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 87 after subtracting 0 from 87.
Take the next digit (1) from the dividend and append it to 87, then repeat: 871 / 621

Moving on to step 3:
621 can be fit into 871 1 times, resulting in a remainder of 250.
The next digit of our result is 1. 
Result so far: 1.0
If we take 621 away from 871, we end up with 250.
Append the next digit (0) from the dividend to 250 and continue with: 2500 / 621

On to step 4:
If we divide 2500 by 621, we get 4 and a remainder of 16.
Record the quotient 4 as the next digit in the result. 
Result so far: 14.0
The remainder is 16 after subtracting 2484 from 2500.
Append the next digit (7) from the dividend to 16 and continue with: 167 / 621

Moving on to step 5:
621 can be fit into 167 0 times, resulting in a remainder of 167.
Put 0 as the next digit of the answer. 
Result so far: 140.0
If we subtract 0 from 167, we get 167.
Take the next digit (3) from the dividend and append it to 167, then repeat: 1673 / 621

On to step 6:
When dividing 1673 by 621, we get 2 with a remainder of 431.
Use 2 as the next digit of our solution. 
Result so far: 1402.0
Deduct 1242 from 1673 and we're left with 431.
Fetch the next digit (7) from the dividend, attach it to 431 and continue: 4317 / 621

Going ahead to step 7:
If we divide 4317 by 621, we get 6 and a remainder of 591.
The number 6 becomes the next digit in our result. 
Result so far: 14026.0
The remainder is 591 after subtracting 3726 from 4317.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5910, and continue the process.

Let's proceed to step 8:
621 can be fit into 5910 9 times, resulting in a remainder of 321.
The next digit of our result is 9. 
Result so far: 14026.9
The remainder is 321 after subtracting 5589 from 5910.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3210, and continue the process.

Advancing to step 9:
621 can be fit into 3210 5 times, resulting in a remainder of 105.
Record the quotient 5 as the next digit in the result. 
Result so far: 14026.95
The remainder is 105 after subtracting 3105 from 3210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1050, and continue the process.

On to step 10:
1050 divided by 621 is 1 with a remainder of 429.
Put 1 as the next digit of the answer. 
Result so far: 14026.951
Deduct 621 from 1050 and we're left with 429.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4290, and continue the process.

Going ahead to step 11:
When dividing 4290 by 621, we get 6 with a remainder of 564.
Record the quotient 6 as the next digit in the result. 
Result so far: 14026.9516
Subtracting 3726 from 4290 leaves us with 564.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5640, and continue the process.

Step 12:
When dividing 5640 by 621, we get 9 with a remainder of 51.
The next digit of our result is 9. 
Result so far: 14026.95169
Subtracting 5589 from 5640 leaves us with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Moving on to step 13:
When dividing 510 by 621, we get 0 with a remainder of 510.
The next digit of our result is 0. 
Result so far: 14026.95169
The remainder is 510 after subtracting 0 from 510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5100, and continue the process.

Let's proceed to step 14:
621 goes into 5100 8 times with a remainder of 132.
The number 8 becomes the next digit in our result. 
Result so far: 14026.9516908
If we take 4968 away from 5100, we end up with 132.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1320, and continue the process.

Step 15:
When dividing 1320 by 621, we get 2 with a remainder of 78.
Write down 2 as next digit of the result. 
Result so far: 14026.95169082
Subtract 1242 from 1320 to get 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

In conclusion, the division gives 14026.95169082 with a balance of 7.8e-08.