61818028 divided by 23 
The aim is to understand the frequency of 23 in 61818028.

On to step 1:
23 goes into 6 0 times with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Append the next digit (1) from the dividend to 6 and continue with: 61 / 23

Going ahead to step 2:
When dividing 61 by 23, we get 2 with a remainder of 15.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we subtract 46 from 61, we get 15.
Bring next digit (8) of the dividend behind the 15 and repeat the process: 158 / 23

Advancing to step 3:
23 can be fit into 158 6 times, resulting in a remainder of 20.
Record the quotient 6 as the next digit in the result. 
Result so far: 26.0
If we take 138 away from 158, we end up with 20.
Include the next digit (1) from the dividend after 20, then repeat: 201 / 23

Step 4:
23 can be fit into 201 8 times, resulting in a remainder of 17.
The number 8 becomes the next digit in our result. 
Result so far: 268.0
If we take 184 away from 201, we end up with 17.
Include the next digit (8) from the dividend after 17, then repeat: 178 / 23

On to step 5:
178 divided by 23 is 7 with a remainder of 17.
Use 7 as the next digit of our solution. 
Result so far: 2687.0
The remainder is 17 after subtracting 161 from 178.
Take the next digit (0) from the dividend and append it to 17, then repeat: 170 / 23

Going ahead to step 6:
When dividing 170 by 23, we get 7 with a remainder of 9.
The number 7 becomes the next digit in our result. 
Result so far: 26877.0
If we take 161 away from 170, we end up with 9.
Include the next digit (2) from the dividend after 9, then repeat: 92 / 23

Let's proceed to step 7:
23 goes into 92 4 times with a remainder of 0.
The number 4 becomes the next digit in our result. 
Result so far: 268774.0
The remainder is 0 after subtracting 92 from 92.
Bring next digit (8) of the dividend behind the 0 and repeat the process: 8 / 23

On to step 8:
When dividing 8 by 23, we get 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 2687740.0
Deduct 0 from 8 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 9:
If we divide 80 by 23, we get 3 and a remainder of 11.
The next digit of our result is 3. 
Result so far: 2687740.3
If we take 69 away from 80, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Step 10:
When dividing 110 by 23, we get 4 with a remainder of 18.
Use 4 as the next digit of our solution. 
Result so far: 2687740.34
Deduct 92 from 110 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 11:
When dividing 180 by 23, we get 7 with a remainder of 19.
Put 7 as the next digit of the answer. 
Result so far: 2687740.347
Deduct 161 from 180 and we're left with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

On to step 12:
190 divided by 23 is 8 with a remainder of 6.
Record the quotient 8 as the next digit in the result. 
Result so far: 2687740.3478
Subtract 184 from 190 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 13:
When dividing 60 by 23, we get 2 with a remainder of 14.
Put 2 as the next digit of the answer. 
Result so far: 2687740.34782
Subtract 46 from 60 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Advancing to step 14:
If we divide 140 by 23, we get 6 and a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 2687740.347826
Deduct 138 from 140 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 15:
23 goes into 20 0 times with a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 2687740.347826
Subtracting 0 from 20 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 16:
23 can be fit into 200 8 times, resulting in a remainder of 16.
The next digit of our result is 8. 
Result so far: 2687740.34782608
If we subtract 184 from 200, 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.

The final outcome is 2687740.34782608, with a leftover of 1.6e-08.