We're dividing 18423912 by 550 
The aim is to understand the frequency of 550 in 18423912.

Let's proceed to step 1:
If we divide 1 by 550, we get 0 and a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Fetch the next digit (8) from the dividend, attach it to 1 and continue: 18 / 550

Step 2:
18 divided by 550 is 0 with a remainder of 18.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 18, we get 18.
Grab the next digit (4) from the dividend, add it to 18, then carry on: 184 / 550

On to step 3:
550 goes into 184 0 times with a remainder of 184.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 184, we end up with 184.
Append the next digit (2) from the dividend to 184 and continue with: 1842 / 550

On to step 4:
The number 550 fits into 1842 3 times, leaving a remainder of 192.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
The remainder is 192 after subtracting 1650 from 1842.
Grab the next digit (3) from the dividend, add it to 192, then carry on: 1923 / 550

On to step 5:
550 can be fit into 1923 3 times, resulting in a remainder of 273.
Use 3 as the next digit of our solution. 
Result so far: 33.0
The remainder is 273 after subtracting 1650 from 1923.
Take the next digit (9) from the dividend and append it to 273, then repeat: 2739 / 550

Step 6:
550 can be fit into 2739 4 times, resulting in a remainder of 539.
Write down 4 as next digit of the result. 
Result so far: 334.0
The remainder is 539 after subtracting 2200 from 2739.
Grab the next digit (1) from the dividend, add it to 539, then carry on: 5391 / 550

Step 7:
The number 550 fits into 5391 9 times, leaving a remainder of 441.
Write down 9 as next digit of the result. 
Result so far: 3349.0
If we subtract 4950 from 5391, we get 441.
Include the next digit (2) from the dividend after 441, then repeat: 4412 / 550

Step 8:
4412 divided by 550 is 8 with a remainder of 12.
Record the quotient 8 as the next digit in the result. 
Result so far: 33498.0
Subtract 4400 from 4412 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 9:
The number 550 fits into 120 0 times, leaving a remainder of 120.
Put 0 as the next digit of the answer. 
Result so far: 33498.0
If we subtract 0 from 120, we get 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Advancing to step 10:
550 can be fit into 1200 2 times, resulting in a remainder of 100.
Record the quotient 2 as the next digit in the result. 
Result so far: 33498.02
Subtracting 1100 from 1200 leaves us with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Advancing to step 11:
When dividing 1000 by 550, we get 1 with a remainder of 450.
Use 1 as the next digit of our solution. 
Result so far: 33498.021
Deduct 550 from 1000 and we're left with 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4500, and continue the process.

Advancing to step 12:
4500 divided by 550 is 8 with a remainder of 100.
The number 8 becomes the next digit in our result. 
Result so far: 33498.0218
If we subtract 4400 from 4500, we 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.

On to step 13:
550 goes into 1000 1 times with a remainder of 450.
Use 1 as the next digit of our solution. 
Result so far: 33498.02181
If we subtract 550 from 1000, we get 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4500, and continue the process.

Advancing to step 14:
550 can be fit into 4500 8 times, resulting in a remainder of 100.
The next digit of our result is 8. 
Result so far: 33498.021818
If we subtract 4400 from 4500, we 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.

Let's proceed to step 15:
1000 divided by 550 is 1 with a remainder of 450.
The number 1 becomes the next digit in our result. 
Result so far: 33498.0218181
The remainder is 450 after subtracting 550 from 1000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4500, and continue the process.

Going ahead to step 16:
550 goes into 4500 8 times with a remainder of 100.
The next digit of our result is 8. 
Result so far: 33498.02181818
If we subtract 4400 from 4500, we 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.

The final outcome is 33498.02181818, with a leftover of 1e-07.