We're dividing 90783430 by 166 
The aim is to understand the frequency of 166 in 90783430.

Moving on 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.
Include the next digit (0) from the dividend after 9, then repeat: 90 / 166

Let's proceed to step 2:
166 can be fit into 90 0 times, resulting in a remainder of 90.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 90 after subtracting 0 from 90.
Include the next digit (7) from the dividend after 90, then repeat: 907 / 166

Moving on to step 3:
When dividing 907 by 166, we get 5 with a remainder of 77.
Put 5 as the next digit of the answer. 
Result so far: 5.0
If we subtract 830 from 907, we get 77.
Grab the next digit (8) from the dividend, add it to 77, then carry on: 778 / 166

Going ahead to step 4:
166 goes into 778 4 times with a remainder of 114.
Use 4 as the next digit of our solution. 
Result so far: 54.0
Subtract 664 from 778 to get 114.
Include the next digit (3) from the dividend after 114, then repeat: 1143 / 166

Let's proceed to step 5:
166 goes into 1143 6 times with a remainder of 147.
The number 6 becomes the next digit in our result. 
Result so far: 546.0
If we take 996 away from 1143, we end up with 147.
Grab the next digit (4) from the dividend, add it to 147, then carry on: 1474 / 166

Step 6:
166 can be fit into 1474 8 times, resulting in a remainder of 146.
The next digit of our result is 8. 
Result so far: 5468.0
The remainder is 146 after subtracting 1328 from 1474.
Fetch the next digit (3) from the dividend, attach it to 146 and continue: 1463 / 166

On to step 7:
166 goes into 1463 8 times with a remainder of 135.
The number 8 becomes the next digit in our result. 
Result so far: 54688.0
Subtract 1328 from 1463 to get 135.
Bring next digit (0) of the dividend behind the 135 and repeat the process: 1350 / 166

Step 8:
166 goes into 1350 8 times with a remainder of 22.
Record the quotient 8 as the next digit in the result. 
Result so far: 546888.0
The remainder is 22 after subtracting 1328 from 1350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Step 9:
The number 166 fits into 220 1 times, leaving a remainder of 54.
Use 1 as the next digit of our solution. 
Result so far: 546888.1
If we take 166 away from 220, we end up 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.

Let's proceed to step 10:
If we divide 540 by 166, we get 3 and a remainder of 42.
Record the quotient 3 as the next digit in the result. 
Result so far: 546888.13
Subtract 498 from 540 to get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Step 11:
420 divided by 166 is 2 with a remainder of 88.
Record the quotient 2 as the next digit in the result. 
Result so far: 546888.132
If we take 332 away from 420, we end up with 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

Step 12:
166 can be fit into 880 5 times, resulting in a remainder of 50.
Record the quotient 5 as the next digit in the result. 
Result so far: 546888.1325
If we take 830 away from 880, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 13:
When dividing 500 by 166, we get 3 with a remainder of 2.
The number 3 becomes the next digit in our result. 
Result so far: 546888.13253
Subtracting 498 from 500 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 14:
166 can be fit into 20 0 times, resulting in a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 546888.13253
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 15:
When dividing 200 by 166, we get 1 with a remainder of 34.
Put 1 as the next digit of the answer. 
Result so far: 546888.1325301
If we subtract 166 from 200, we get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Going ahead to step 16:
The number 166 fits into 340 2 times, leaving a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 546888.13253012
If we subtract 332 from 340, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

In conclusion, the division gives 546888.13253012 with a balance of 8e-09.