We're dividing 68350479 by 166 
The aim is to understand the frequency of 166 in 68350479.

Step 1:
When dividing 6 by 166, we get 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Append the next digit (8) from the dividend to 6 and continue with: 68 / 166

On to step 2:
The number 166 fits into 68 0 times, leaving a remainder of 68.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 68 and we're left with 68.
Fetch the next digit (3) from the dividend, attach it to 68 and continue: 683 / 166

On to step 3:
166 can be fit into 683 4 times, resulting in a remainder of 19.
Use 4 as the next digit of our solution. 
Result so far: 4.0
If we take 664 away from 683, we end up with 19.
Fetch the next digit (5) from the dividend, attach it to 19 and continue: 195 / 166

Advancing to step 4:
If we divide 195 by 166, we get 1 and a remainder of 29.
The number 1 becomes the next digit in our result. 
Result so far: 41.0
Deduct 166 from 195 and we're left with 29.
Grab the next digit (0) from the dividend, add it to 29, then carry on: 290 / 166

Advancing to step 5:
290 divided by 166 is 1 with a remainder of 124.
The next digit of our result is 1. 
Result so far: 411.0
Subtracting 166 from 290 leaves us with 124.
Append the next digit (4) from the dividend to 124 and continue with: 1244 / 166

Going ahead to step 6:
166 can be fit into 1244 7 times, resulting in a remainder of 82.
The next digit of our result is 7. 
Result so far: 4117.0
Subtract 1162 from 1244 to get 82.
Bring next digit (7) of the dividend behind the 82 and repeat the process: 827 / 166

Advancing to step 7:
The number 166 fits into 827 4 times, leaving a remainder of 163.
Record the quotient 4 as the next digit in the result. 
Result so far: 41174.0
If we take 664 away from 827, we end up with 163.
Grab the next digit (9) from the dividend, add it to 163, then carry on: 1639 / 166

Advancing to step 8:
If we divide 1639 by 166, we get 9 and a remainder of 145.
Put 9 as the next digit of the answer. 
Result so far: 411749.0
Subtracting 1494 from 1639 leaves us with 145.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1450, and continue the process.

Step 9:
If we divide 1450 by 166, we get 8 and a remainder of 122.
Write down 8 as next digit of the result. 
Result so far: 411749.8
Subtracting 1328 from 1450 leaves us with 122.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1220, and continue the process.

On to step 10:
1220 divided by 166 is 7 with a remainder of 58.
The number 7 becomes the next digit in our result. 
Result so far: 411749.87
The remainder is 58 after subtracting 1162 from 1220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Going ahead to step 11:
When dividing 580 by 166, we get 3 with a remainder of 82.
Record the quotient 3 as the next digit in the result. 
Result so far: 411749.873
If we subtract 498 from 580, we get 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 12:
820 divided by 166 is 4 with a remainder of 156.
Use 4 as the next digit of our solution. 
Result so far: 411749.8734
Deduct 664 from 820 and we're left with 156.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1560, and continue the process.

Going ahead to step 13:
The number 166 fits into 1560 9 times, leaving a remainder of 66.
Write down 9 as next digit of the result. 
Result so far: 411749.87349
The remainder is 66 after subtracting 1494 from 1560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Going ahead to step 14:
If we divide 660 by 166, we get 3 and a remainder of 162.
The number 3 becomes the next digit in our result. 
Result so far: 411749.873493
Subtract 498 from 660 to get 162.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1620, and continue the process.

Going ahead to step 15:
166 can be fit into 1620 9 times, resulting in a remainder of 126.
Use 9 as the next digit of our solution. 
Result so far: 411749.8734939
Subtract 1494 from 1620 to get 126.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1260, and continue the process.

On to step 16:
166 can be fit into 1260 7 times, resulting in a remainder of 98.
The number 7 becomes the next digit in our result. 
Result so far: 411749.87349397
Subtracting 1162 from 1260 leaves us with 98.
Since there are no more digits in the dividend, we add a zero to the remainder making it 980, and continue the process.

After the division, we end up with 411749.87349397 and a remainder of 9.8e-08.