We look at the division of 3660846 by 668 
The aim is to understand the frequency of 668 in 3660846.

Moving on to step 1:
3 divided by 668 is 0 with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Append the next digit (6) from the dividend to 3 and continue with: 36 / 668

Step 2:
668 can be fit into 36 0 times, resulting in a remainder of 36.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 36 leaves us with 36.
Fetch the next digit (6) from the dividend, attach it to 36 and continue: 366 / 668

Step 3:
When dividing 366 by 668, we get 0 with a remainder of 366.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 366, we get 366.
Append the next digit (0) from the dividend to 366 and continue with: 3660 / 668

Let's proceed to step 4:
If we divide 3660 by 668, we get 5 and a remainder of 320.
Put 5 as the next digit of the answer. 
Result so far: 5.0
Deduct 3340 from 3660 and we're left with 320.
Bring next digit (8) of the dividend behind the 320 and repeat the process: 3208 / 668

On to step 5:
The number 668 fits into 3208 4 times, leaving a remainder of 536.
Put 4 as the next digit of the answer. 
Result so far: 54.0
Subtract 2672 from 3208 to get 536.
Bring next digit (4) of the dividend behind the 536 and repeat the process: 5364 / 668

Step 6:
5364 divided by 668 is 8 with a remainder of 20.
Write down 8 as next digit of the result. 
Result so far: 548.0
The remainder is 20 after subtracting 5344 from 5364.
Take the next digit (6) from the dividend and append it to 20, then repeat: 206 / 668

Moving on to step 7:
When dividing 206 by 668, we get 0 with a remainder of 206.
Put 0 as the next digit of the answer. 
Result so far: 5480.0
Subtracting 0 from 206 leaves us with 206.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2060, and continue the process.

Step 8:
The number 668 fits into 2060 3 times, leaving a remainder of 56.
The number 3 becomes the next digit in our result. 
Result so far: 5480.3
Deduct 2004 from 2060 and we're left with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Advancing to step 9:
The number 668 fits into 560 0 times, leaving a remainder of 560.
Use 0 as the next digit of our solution. 
Result so far: 5480.3
Subtracting 0 from 560 leaves us with 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

Moving on to step 10:
668 goes into 5600 8 times with a remainder of 256.
Record the quotient 8 as the next digit in the result. 
Result so far: 5480.308
Subtracting 5344 from 5600 leaves us with 256.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2560, and continue the process.

Let's proceed to step 11:
When dividing 2560 by 668, we get 3 with a remainder of 556.
Put 3 as the next digit of the answer. 
Result so far: 5480.3083
If we take 2004 away from 2560, we end up with 556.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5560, and continue the process.

Let's proceed to step 12:
668 can be fit into 5560 8 times, resulting in a remainder of 216.
The number 8 becomes the next digit in our result. 
Result so far: 5480.30838
If we subtract 5344 from 5560, we get 216.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2160, and continue the process.

Moving on to step 13:
When dividing 2160 by 668, we get 3 with a remainder of 156.
Write down 3 as next digit of the result. 
Result so far: 5480.308383
Subtract 2004 from 2160 to get 156.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1560, and continue the process.

On to step 14:
1560 divided by 668 is 2 with a remainder of 224.
The next digit of our result is 2. 
Result so far: 5480.3083832
The remainder is 224 after subtracting 1336 from 1560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2240, and continue the process.

Step 15:
2240 divided by 668 is 3 with a remainder of 236.
Put 3 as the next digit of the answer. 
Result so far: 5480.30838323
If we take 2004 away from 2240, we end up with 236.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2360, and continue the process.

The final result is 5480.30838323 with a remainder of 2.36e-07.