17791361 divided by 668 
The aim is to understand the frequency of 668 in 17791361.

Step 1:
1 divided by 668 is 0 with 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.
Grab the next digit (7) from the dividend, add it to 1, then carry on: 17 / 668

Moving on to step 2:
The number 668 fits into 17 0 times, leaving a remainder of 17.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 17 leaves us with 17.
Bring next digit (7) of the dividend behind the 17 and repeat the process: 177 / 668

Let's proceed to step 3:
When dividing 177 by 668, we get 0 with a remainder of 177.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 177 leaves us with 177.
Take the next digit (9) from the dividend and append it to 177, then repeat: 1779 / 668

Let's proceed to step 4:
The number 668 fits into 1779 2 times, leaving a remainder of 443.
The next digit of our result is 2. 
Result so far: 2.0
The remainder is 443 after subtracting 1336 from 1779.
Grab the next digit (1) from the dividend, add it to 443, then carry on: 4431 / 668

Step 5:
If we divide 4431 by 668, we get 6 and a remainder of 423.
Write down 6 as next digit of the result. 
Result so far: 26.0
Subtract 4008 from 4431 to get 423.
Bring next digit (3) of the dividend behind the 423 and repeat the process: 4233 / 668

On to step 6:
If we divide 4233 by 668, we get 6 and a remainder of 225.
The next digit of our result is 6. 
Result so far: 266.0
Deduct 4008 from 4233 and we're left with 225.
Bring next digit (6) of the dividend behind the 225 and repeat the process: 2256 / 668

Advancing to step 7:
When dividing 2256 by 668, we get 3 with a remainder of 252.
Use 3 as the next digit of our solution. 
Result so far: 2663.0
If we take 2004 away from 2256, we end up with 252.
Include the next digit (1) from the dividend after 252, then repeat: 2521 / 668

Let's proceed to step 8:
668 goes into 2521 3 times with a remainder of 517.
The number 3 becomes the next digit in our result. 
Result so far: 26633.0
The remainder is 517 after subtracting 2004 from 2521.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5170, and continue the process.

Let's proceed to step 9:
If we divide 5170 by 668, we get 7 and a remainder of 494.
Put 7 as the next digit of the answer. 
Result so far: 26633.7
Subtract 4676 from 5170 to get 494.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4940, and continue the process.

Advancing to step 10:
668 goes into 4940 7 times with a remainder of 264.
Write down 7 as next digit of the result. 
Result so far: 26633.77
Subtracting 4676 from 4940 leaves us with 264.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2640, and continue the process.

Our division results in 26633.77 with a remaining 0.264.