We're dividing 487980 by 23 
The aim is to understand the frequency of 23 in 487980.

Advancing to step 1:
The number 23 fits into 4 0 times, leaving a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Fetch the next digit (8) from the dividend, attach it to 4 and continue: 48 / 23

Advancing to step 2:
The number 23 fits into 48 2 times, leaving a remainder of 2.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtracting 46 from 48 leaves us with 2.
Bring next digit (7) of the dividend behind the 2 and repeat the process: 27 / 23

Step 3:
27 divided by 23 is 1 with a remainder of 4.
Put 1 as the next digit of the answer. 
Result so far: 21.0
If we take 23 away from 27, we end up with 4.
Append the next digit (9) from the dividend to 4 and continue with: 49 / 23

Moving on to step 4:
When dividing 49 by 23, we get 2 with a remainder of 3.
The next digit of our result is 2. 
Result so far: 212.0
Subtract 46 from 49 to get 3.
Grab the next digit (8) from the dividend, add it to 3, then carry on: 38 / 23

Let's proceed to step 5:
23 can be fit into 38 1 times, resulting in a remainder of 15.
The number 1 becomes the next digit in our result. 
Result so far: 2121.0
If we take 23 away from 38, we end up with 15.
Grab the next digit (0) from the dividend, add it to 15, then carry on: 150 / 23

Advancing to step 6:
The number 23 fits into 150 6 times, leaving a remainder of 12.
Use 6 as the next digit of our solution. 
Result so far: 21216.0
The remainder is 12 after subtracting 138 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 7:
If we divide 120 by 23, we get 5 and a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 21216.5
Subtracting 115 from 120 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 8:
If we divide 50 by 23, we get 2 and a remainder of 4.
Write down 2 as next digit of the result. 
Result so far: 21216.52
If we subtract 46 from 50, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 9:
The number 23 fits into 40 1 times, leaving a remainder of 17.
Write down 1 as next digit of the result. 
Result so far: 21216.521
If we take 23 away from 40, we end up with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Let's proceed to step 10:
23 goes into 170 7 times with a remainder of 9.
Use 7 as the next digit of our solution. 
Result so far: 21216.5217
Deduct 161 from 170 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 11:
When dividing 90 by 23, we get 3 with a remainder of 21.
Put 3 as the next digit of the answer. 
Result so far: 21216.52173
Deduct 69 from 90 and we're left with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Let's proceed to step 12:
When dividing 210 by 23, we get 9 with a remainder of 3.
The next digit of our result is 9. 
Result so far: 21216.521739
Deduct 207 from 210 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 13:
23 goes into 30 1 times with a remainder of 7.
Write down 1 as next digit of the result. 
Result so far: 21216.5217391
Deduct 23 from 30 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.

Moving on to step 14:
23 goes into 70 3 times with a remainder of 1.
Put 3 as the next digit of the answer. 
Result so far: 21216.52173913
Subtracting 69 from 70 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

The final result is 21216.52173913 with a remainder of 1e-09.