90649356 divided by 166 
The aim is to understand the frequency of 166 in 90649356.

Advancing to step 1:
The number 166 fits into 9 0 times, leaving a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Append the next digit (0) from the dividend to 9 and continue with: 90 / 166

On to step 2:
The number 166 fits into 90 0 times, leaving a remainder of 90.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 90, we end up with 90.
Grab the next digit (6) from the dividend, add it to 90, then carry on: 906 / 166

On to step 3:
When dividing 906 by 166, we get 5 with a remainder of 76.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
Deduct 830 from 906 and we're left with 76.
Append the next digit (4) from the dividend to 76 and continue with: 764 / 166

Let's proceed to step 4:
166 can be fit into 764 4 times, resulting in a remainder of 100.
Put 4 as the next digit of the answer. 
Result so far: 54.0
The remainder is 100 after subtracting 664 from 764.
Bring next digit (9) of the dividend behind the 100 and repeat the process: 1009 / 166

Advancing to step 5:
When dividing 1009 by 166, we get 6 with a remainder of 13.
Record the quotient 6 as the next digit in the result. 
Result so far: 546.0
Deduct 996 from 1009 and we're left with 13.
Take the next digit (3) from the dividend and append it to 13, then repeat: 133 / 166

Moving on to step 6:
166 goes into 133 0 times with a remainder of 133.
The next digit of our result is 0. 
Result so far: 5460.0
Subtract 0 from 133 to get 133.
Append the next digit (5) from the dividend to 133 and continue with: 1335 / 166

Going ahead to step 7:
166 can be fit into 1335 8 times, resulting in a remainder of 7.
Put 8 as the next digit of the answer. 
Result so far: 54608.0
Subtracting 1328 from 1335 leaves us with 7.
Grab the next digit (6) from the dividend, add it to 7, then carry on: 76 / 166

Let's proceed to step 8:
If we divide 76 by 166, we get 0 and a remainder of 76.
Record the quotient 0 as the next digit in the result. 
Result so far: 546080.0
Subtract 0 from 76 to get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Step 9:
760 divided by 166 is 4 with a remainder of 96.
Write down 4 as next digit of the result. 
Result so far: 546080.4
If we subtract 664 from 760, we get 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Let's proceed to step 10:
The number 166 fits into 960 5 times, leaving a remainder of 130.
Put 5 as the next digit of the answer. 
Result so far: 546080.45
Deduct 830 from 960 and we're left with 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

Advancing to step 11:
If we divide 1300 by 166, we get 7 and a remainder of 138.
Use 7 as the next digit of our solution. 
Result so far: 546080.457
Deduct 1162 from 1300 and we're left with 138.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1380, and continue the process.

On to step 12:
166 goes into 1380 8 times with a remainder of 52.
Record the quotient 8 as the next digit in the result. 
Result so far: 546080.4578
Subtract 1328 from 1380 to get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Step 13:
520 divided by 166 is 3 with a remainder of 22.
Use 3 as the next digit of our solution. 
Result so far: 546080.45783
If we take 498 away from 520, we end up with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Step 14:
The number 166 fits into 220 1 times, leaving a remainder of 54.
The next digit of our result is 1. 
Result so far: 546080.457831
Deduct 166 from 220 and we're left with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Going ahead to step 15:
The number 166 fits into 540 3 times, leaving a remainder of 42.
Record the quotient 3 as the next digit in the result. 
Result so far: 546080.4578313
Deduct 498 from 540 and we're left with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Let's proceed to step 16:
166 can be fit into 420 2 times, resulting in a remainder of 88.
Use 2 as the next digit of our solution. 
Result so far: 546080.45783132
Subtract 332 from 420 to get 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

In conclusion, the division gives 546080.45783132 with a balance of 8.8e-08.