We're dividing 18685278 by 668 
The aim is to understand the frequency of 668 in 18685278.

Advancing to step 1:
When dividing 1 by 668, we get 0 with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Append the next digit (8) from the dividend to 1 and continue with: 18 / 668

Let's proceed to step 2:
18 divided by 668 is 0 with a remainder of 18.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 18 leaves us with 18.
Take the next digit (6) from the dividend and append it to 18, then repeat: 186 / 668

On to step 3:
When dividing 186 by 668, we get 0 with a remainder of 186.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 186 leaves us with 186.
Grab the next digit (8) from the dividend, add it to 186, then carry on: 1868 / 668

Advancing to step 4:
1868 divided by 668 is 2 with a remainder of 532.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtract 1336 from 1868 to get 532.
Take the next digit (5) from the dividend and append it to 532, then repeat: 5325 / 668

Going ahead to step 5:
If we divide 5325 by 668, we get 7 and a remainder of 649.
Record the quotient 7 as the next digit in the result. 
Result so far: 27.0
Subtract 4676 from 5325 to get 649.
Grab the next digit (2) from the dividend, add it to 649, then carry on: 6492 / 668

Advancing to step 6:
The number 668 fits into 6492 9 times, leaving a remainder of 480.
The next digit of our result is 9. 
Result so far: 279.0
Subtracting 6012 from 6492 leaves us with 480.
Grab the next digit (7) from the dividend, add it to 480, then carry on: 4807 / 668

On to step 7:
668 goes into 4807 7 times with a remainder of 131.
Record the quotient 7 as the next digit in the result. 
Result so far: 2797.0
Subtract 4676 from 4807 to get 131.
Take the next digit (8) from the dividend and append it to 131, then repeat: 1318 / 668

On to step 8:
The number 668 fits into 1318 1 times, leaving a remainder of 650.
The next digit of our result is 1. 
Result so far: 27971.0
Subtracting 668 from 1318 leaves us with 650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6500, and continue the process.

Advancing to step 9:
If we divide 6500 by 668, we get 9 and a remainder of 488.
Record the quotient 9 as the next digit in the result. 
Result so far: 27971.9
Subtract 6012 from 6500 to get 488.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4880, and continue the process.

Let's proceed to step 10:
668 can be fit into 4880 7 times, resulting in a remainder of 204.
Record the quotient 7 as the next digit in the result. 
Result so far: 27971.97
Subtracting 4676 from 4880 leaves us with 204.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2040, and continue the process.

Let's proceed to step 11:
668 goes into 2040 3 times with a remainder of 36.
The next digit of our result is 3. 
Result so far: 27971.973
Subtracting 2004 from 2040 leaves us with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Let's proceed to step 12:
If we divide 360 by 668, we get 0 and a remainder of 360.
Write down 0 as next digit of the result. 
Result so far: 27971.973
If we take 0 away from 360, we end up with 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Advancing to step 13:
3600 divided by 668 is 5 with a remainder of 260.
Put 5 as the next digit of the answer. 
Result so far: 27971.97305
Subtracting 3340 from 3600 leaves us with 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Step 14:
The number 668 fits into 2600 3 times, leaving a remainder of 596.
Use 3 as the next digit of our solution. 
Result so far: 27971.973053
If we subtract 2004 from 2600, we get 596.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5960, and continue the process.

Let's proceed to step 15:
5960 divided by 668 is 8 with a remainder of 616.
The next digit of our result is 8. 
Result so far: 27971.9730538
If we take 5344 away from 5960, we end up with 616.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6160, and continue the process.

Going ahead to step 16:
668 goes into 6160 9 times with a remainder of 148.
The next digit of our result is 9. 
Result so far: 27971.97305389
Subtract 6012 from 6160 to get 148.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1480, and continue the process.

The quotient of the division is 27971.97305389, and the remainder is 1.48e-07.