We look at the division of 621691 by 36 
The aim is to understand the frequency of 36 in 621691.

On to step 1:
When dividing 6 by 36, we get 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Take the next digit (2) from the dividend and append it to 6, then repeat: 62 / 36

Moving on to step 2:
36 can be fit into 62 1 times, resulting in a remainder of 26.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 36 from 62, we get 26.
Append the next digit (1) from the dividend to 26 and continue with: 261 / 36

Moving on to step 3:
When dividing 261 by 36, we get 7 with a remainder of 9.
Write down 7 as next digit of the result. 
Result so far: 17.0
If we take 252 away from 261, we end up with 9.
Include the next digit (6) from the dividend after 9, then repeat: 96 / 36

Advancing to step 4:
When dividing 96 by 36, we get 2 with a remainder of 24.
Write down 2 as next digit of the result. 
Result so far: 172.0
The remainder is 24 after subtracting 72 from 96.
Include the next digit (9) from the dividend after 24, then repeat: 249 / 36

Moving on to step 5:
36 can be fit into 249 6 times, resulting in a remainder of 33.
Use 6 as the next digit of our solution. 
Result so far: 1726.0
If we take 216 away from 249, we end up with 33.
Bring next digit (1) of the dividend behind the 33 and repeat the process: 331 / 36

Step 6:
36 can be fit into 331 9 times, resulting in a remainder of 7.
The number 9 becomes the next digit in our result. 
Result so far: 17269.0
Deduct 324 from 331 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Let's proceed to step 7:
When dividing 70 by 36, we get 1 with a remainder of 34.
Record the quotient 1 as the next digit in the result. 
Result so far: 17269.1
The remainder is 34 after subtracting 36 from 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

On to step 8:
36 can be fit into 340 9 times, resulting in a remainder of 16.
The number 9 becomes the next digit in our result. 
Result so far: 17269.19
If we take 324 away from 340, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 9:
The number 36 fits into 160 4 times, leaving a remainder of 16.
Use 4 as the next digit of our solution. 
Result so far: 17269.194
If we subtract 144 from 160, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 10:
The number 36 fits into 160 4 times, leaving a remainder of 16.
Record the quotient 4 as the next digit in the result. 
Result so far: 17269.1944
Subtract 144 from 160 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

In conclusion, the division gives 17269.1944 with a balance of 0.00016.