Let's divide 66899928 by 550
The aim is to understand the frequency of 550 in 66899928.

Step 1:
550 goes into 6 0 times with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Grab the next digit (6) from the dividend, add it to 6, then carry on: 66 / 550

On to step 2:
550 can be fit into 66 0 times, resulting in a remainder of 66.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 66 to get 66.
Fetch the next digit (8) from the dividend, attach it to 66 and continue: 668 / 550

Advancing to step 3:
When dividing 668 by 550, we get 1 with a remainder of 118.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 550 from 668 and we're left with 118.
Append the next digit (9) from the dividend to 118 and continue with: 1189 / 550

Let's proceed to step 4:
550 goes into 1189 2 times with a remainder of 89.
Write down 2 as next digit of the result. 
Result so far: 12.0
Subtract 1100 from 1189 to get 89.
Take the next digit (9) from the dividend and append it to 89, then repeat: 899 / 550

Going ahead to step 5:
899 divided by 550 is 1 with a remainder of 349.
The next digit of our result is 1. 
Result so far: 121.0
Subtract 550 from 899 to get 349.
Append the next digit (9) from the dividend to 349 and continue with: 3499 / 550

Advancing to step 6:
550 goes into 3499 6 times with a remainder of 199.
The next digit of our result is 6. 
Result so far: 1216.0
Subtract 3300 from 3499 to get 199.
Fetch the next digit (2) from the dividend, attach it to 199 and continue: 1992 / 550

Step 7:
550 goes into 1992 3 times with a remainder of 342.
Use 3 as the next digit of our solution. 
Result so far: 12163.0
Subtracting 1650 from 1992 leaves us with 342.
Fetch the next digit (8) from the dividend, attach it to 342 and continue: 3428 / 550

Going ahead to step 8:
When dividing 3428 by 550, we get 6 with a remainder of 128.
Use 6 as the next digit of our solution. 
Result so far: 121636.0
Subtracting 3300 from 3428 leaves us with 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

Going ahead to step 9:
1280 divided by 550 is 2 with a remainder of 180.
The number 2 becomes the next digit in our result. 
Result so far: 121636.2
Deduct 1100 from 1280 and we're left with 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Going ahead to step 10:
If we divide 1800 by 550, we get 3 and a remainder of 150.
Use 3 as the next digit of our solution. 
Result so far: 121636.23
If we subtract 1650 from 1800, we get 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Step 11:
550 can be fit into 1500 2 times, resulting in a remainder of 400.
Put 2 as the next digit of the answer. 
Result so far: 121636.232
The remainder is 400 after subtracting 1100 from 1500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

On to step 12:
If we divide 4000 by 550, we get 7 and a remainder of 150.
Put 7 as the next digit of the answer. 
Result so far: 121636.2327
If we take 3850 away from 4000, we end up with 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Let's proceed to step 13:
550 can be fit into 1500 2 times, resulting in a remainder of 400.
The number 2 becomes the next digit in our result. 
Result so far: 121636.23272
If we take 1100 away from 1500, we end up with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Going ahead to step 14:
If we divide 4000 by 550, we get 7 and a remainder of 150.
The number 7 becomes the next digit in our result. 
Result so far: 121636.232727
Deduct 3850 from 4000 and we're left with 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Let's proceed to step 15:
550 can be fit into 1500 2 times, resulting in a remainder of 400.
The number 2 becomes the next digit in our result. 
Result so far: 121636.2327272
Subtracting 1100 from 1500 leaves us with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Moving on to step 16:
4000 divided by 550 is 7 with a remainder of 150.
Use 7 as the next digit of our solution. 
Result so far: 121636.23272727
Deduct 3850 from 4000 and we're left with 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

The final result is 121636.23272727 with a remainder of 1.5e-07.