We look at the division of 6427768 by 166 
The aim is to understand the frequency of 166 in 6427768.

Going ahead to step 1:
When dividing 6 by 166, we get 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Append the next digit (4) from the dividend to 6 and continue with: 64 / 166

Moving on to step 2:
If we divide 64 by 166, we get 0 and a remainder of 64.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 64 to get 64.
Include the next digit (2) from the dividend after 64, then repeat: 642 / 166

Moving on to step 3:
166 goes into 642 3 times with a remainder of 144.
Use 3 as the next digit of our solution. 
Result so far: 3.0
If we subtract 498 from 642, we get 144.
Fetch the next digit (7) from the dividend, attach it to 144 and continue: 1447 / 166

On to step 4:
166 goes into 1447 8 times with a remainder of 119.
Write down 8 as next digit of the result. 
Result so far: 38.0
If we subtract 1328 from 1447, we get 119.
Include the next digit (7) from the dividend after 119, then repeat: 1197 / 166

Step 5:
166 goes into 1197 7 times with a remainder of 35.
The number 7 becomes the next digit in our result. 
Result so far: 387.0
If we take 1162 away from 1197, we end up with 35.
Fetch the next digit (6) from the dividend, attach it to 35 and continue: 356 / 166

Moving on to step 6:
166 can be fit into 356 2 times, resulting in a remainder of 24.
Put 2 as the next digit of the answer. 
Result so far: 3872.0
Deduct 332 from 356 and we're left with 24.
Bring next digit (8) of the dividend behind the 24 and repeat the process: 248 / 166

Moving on to step 7:
166 goes into 248 1 times with a remainder of 82.
Use 1 as the next digit of our solution. 
Result so far: 38721.0
Subtracting 166 from 248 leaves us with 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Moving on to step 8:
The number 166 fits into 820 4 times, leaving a remainder of 156.
The number 4 becomes the next digit in our result. 
Result so far: 38721.4
Subtract 664 from 820 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.

Step 9:
166 can be fit into 1560 9 times, resulting in a remainder of 66.
Put 9 as the next digit of the answer. 
Result so far: 38721.49
Deduct 1494 from 1560 and we're left with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Moving on to step 10:
660 divided by 166 is 3 with a remainder of 162.
Write down 3 as next digit of the result. 
Result so far: 38721.493
If we take 498 away from 660, we end up with 162.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1620, and continue the process.

Step 11:
1620 divided by 166 is 9 with a remainder of 126.
The next digit of our result is 9. 
Result so far: 38721.4939
Subtracting 1494 from 1620 leaves us with 126.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1260, and continue the process.

Moving on to step 12:
166 goes into 1260 7 times with a remainder of 98.
Write down 7 as next digit of the result. 
Result so far: 38721.49397
The remainder is 98 after subtracting 1162 from 1260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 980, and continue the process.

Let's proceed to step 13:
When dividing 980 by 166, we get 5 with a remainder of 150.
The number 5 becomes the next digit in our result. 
Result so far: 38721.493975
Subtract 830 from 980 to 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.

Let's proceed to step 14:
The number 166 fits into 1500 9 times, leaving a remainder of 6.
The next digit of our result is 9. 
Result so far: 38721.4939759
If we subtract 1494 from 1500, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 15:
166 can be fit into 60 0 times, resulting in a remainder of 60.
The number 0 becomes the next digit in our result. 
Result so far: 38721.4939759
Subtract 0 from 60 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Our division results in 38721.4939759 with a remaining 6e-08.