We look at the division of 40604201 by 621 
The aim is to understand the frequency of 621 in 40604201.

Moving on to step 1:
621 goes into 4 0 times with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Take the next digit (0) from the dividend and append it to 4, then repeat: 40 / 621

Let's proceed to step 2:
40 divided by 621 is 0 with a remainder of 40.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 40, we get 40.
Bring next digit (6) of the dividend behind the 40 and repeat the process: 406 / 621

Moving on to step 3:
If we divide 406 by 621, we get 0 and a remainder of 406.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 406 and we're left with 406.
Bring next digit (0) of the dividend behind the 406 and repeat the process: 4060 / 621

Advancing to step 4:
If we divide 4060 by 621, we get 6 and a remainder of 334.
Put 6 as the next digit of the answer. 
Result so far: 6.0
Subtracting 3726 from 4060 leaves us with 334.
Include the next digit (4) from the dividend after 334, then repeat: 3344 / 621

Moving on to step 5:
If we divide 3344 by 621, we get 5 and a remainder of 239.
Record the quotient 5 as the next digit in the result. 
Result so far: 65.0
If we subtract 3105 from 3344, we get 239.
Take the next digit (2) from the dividend and append it to 239, then repeat: 2392 / 621

Let's proceed to step 6:
621 goes into 2392 3 times with a remainder of 529.
The next digit of our result is 3. 
Result so far: 653.0
If we subtract 1863 from 2392, we get 529.
Append the next digit (0) from the dividend to 529 and continue with: 5290 / 621

Let's proceed to step 7:
The number 621 fits into 5290 8 times, leaving a remainder of 322.
Record the quotient 8 as the next digit in the result. 
Result so far: 6538.0
If we take 4968 away from 5290, we end up with 322.
Append the next digit (1) from the dividend to 322 and continue with: 3221 / 621

Step 8:
When dividing 3221 by 621, we get 5 with a remainder of 116.
Put 5 as the next digit of the answer. 
Result so far: 65385.0
If we take 3105 away from 3221, we end up with 116.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

Going ahead to step 9:
1160 divided by 621 is 1 with a remainder of 539.
Use 1 as the next digit of our solution. 
Result so far: 65385.1
Deduct 621 from 1160 and we're left with 539.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5390, and continue the process.

Going ahead to step 10:
621 goes into 5390 8 times with a remainder of 422.
Write down 8 as next digit of the result. 
Result so far: 65385.18
Subtracting 4968 from 5390 leaves us with 422.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4220, and continue the process.

Going ahead to step 11:
621 goes into 4220 6 times with a remainder of 494.
The number 6 becomes the next digit in our result. 
Result so far: 65385.186
If we take 3726 away from 4220, we end up with 494.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4940, and continue the process.

Step 12:
621 goes into 4940 7 times with a remainder of 593.
Use 7 as the next digit of our solution. 
Result so far: 65385.1867
Deduct 4347 from 4940 and we're left with 593.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5930, and continue the process.

Going ahead to step 13:
621 can be fit into 5930 9 times, resulting in a remainder of 341.
Use 9 as the next digit of our solution. 
Result so far: 65385.18679
Deduct 5589 from 5930 and we're left with 341.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3410, and continue the process.

Step 14:
When dividing 3410 by 621, we get 5 with a remainder of 305.
The next digit of our result is 5. 
Result so far: 65385.186795
Subtract 3105 from 3410 to get 305.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3050, and continue the process.

Going ahead to step 15:
If we divide 3050 by 621, we get 4 and a remainder of 566.
Use 4 as the next digit of our solution. 
Result so far: 65385.1867954
If we take 2484 away from 3050, we end up with 566.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5660, and continue the process.

On to step 16:
5660 divided by 621 is 9 with a remainder of 71.
Use 9 as the next digit of our solution. 
Result so far: 65385.18679549
The remainder is 71 after subtracting 5589 from 5660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

In conclusion, the division gives 65385.18679549 with a balance of 7.1e-08.