We look at the division of 55836955 by 810 
The aim is to understand the frequency of 810 in 55836955.

Step 1:
The number 810 fits into 5 0 times, leaving a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Take the next digit (5) from the dividend and append it to 5, then repeat: 55 / 810

Advancing to step 2:
If we divide 55 by 810, we get 0 and a remainder of 55.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 55 after subtracting 0 from 55.
Bring next digit (8) of the dividend behind the 55 and repeat the process: 558 / 810

Advancing to step 3:
558 divided by 810 is 0 with a remainder of 558.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 558, we end up with 558.
Take the next digit (3) from the dividend and append it to 558, then repeat: 5583 / 810

Step 4:
The number 810 fits into 5583 6 times, leaving a remainder of 723.
The next digit of our result is 6. 
Result so far: 6.0
Subtracting 4860 from 5583 leaves us with 723.
Include the next digit (6) from the dividend after 723, then repeat: 7236 / 810

Advancing to step 5:
810 goes into 7236 8 times with a remainder of 756.
The number 8 becomes the next digit in our result. 
Result so far: 68.0
Deduct 6480 from 7236 and we're left with 756.
Fetch the next digit (9) from the dividend, attach it to 756 and continue: 7569 / 810

Advancing to step 6:
If we divide 7569 by 810, we get 9 and a remainder of 279.
Record the quotient 9 as the next digit in the result. 
Result so far: 689.0
The remainder is 279 after subtracting 7290 from 7569.
Take the next digit (5) from the dividend and append it to 279, then repeat: 2795 / 810

Going ahead to step 7:
If we divide 2795 by 810, we get 3 and a remainder of 365.
Record the quotient 3 as the next digit in the result. 
Result so far: 6893.0
Subtracting 2430 from 2795 leaves us with 365.
Append the next digit (5) from the dividend to 365 and continue with: 3655 / 810

On to step 8:
When dividing 3655 by 810, we get 4 with a remainder of 415.
Use 4 as the next digit of our solution. 
Result so far: 68934.0
The remainder is 415 after subtracting 3240 from 3655.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4150, and continue the process.

Moving on to step 9:
The number 810 fits into 4150 5 times, leaving a remainder of 100.
Record the quotient 5 as the next digit in the result. 
Result so far: 68934.5
Subtract 4050 from 4150 to get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Step 10:
If we divide 1000 by 810, we get 1 and a remainder of 190.
Write down 1 as next digit of the result. 
Result so far: 68934.51
If we subtract 810 from 1000, we get 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

Moving on to step 11:
The number 810 fits into 1900 2 times, leaving a remainder of 280.
Write down 2 as next digit of the result. 
Result so far: 68934.512
If we take 1620 away from 1900, we end up with 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Advancing to step 12:
The number 810 fits into 2800 3 times, leaving a remainder of 370.
The number 3 becomes the next digit in our result. 
Result so far: 68934.5123
Subtracting 2430 from 2800 leaves us with 370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3700, and continue the process.

Going ahead to step 13:
If we divide 3700 by 810, we get 4 and a remainder of 460.
Use 4 as the next digit of our solution. 
Result so far: 68934.51234
Subtracting 3240 from 3700 leaves us with 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4600, and continue the process.

On to step 14:
4600 divided by 810 is 5 with a remainder of 550.
Use 5 as the next digit of our solution. 
Result so far: 68934.512345
If we subtract 4050 from 4600, we get 550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5500, and continue the process.

Let's proceed to step 15:
When dividing 5500 by 810, we get 6 with a remainder of 640.
Use 6 as the next digit of our solution. 
Result so far: 68934.5123456
The remainder is 640 after subtracting 4860 from 5500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

Going ahead to step 16:
The number 810 fits into 6400 7 times, leaving a remainder of 730.
The next digit of our result is 7. 
Result so far: 68934.51234567
Subtracting 5670 from 6400 leaves us with 730.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7300, and continue the process.

After the division, we end up with 68934.51234567 and a remainder of 7.3e-07.