We divide 91691261 by 163
The aim is to understand the frequency of 163 in 91691261.

Step 1:
When dividing 9 by 163, we get 0 with a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Fetch the next digit (1) from the dividend, attach it to 9 and continue: 91 / 163

Step 2:
163 goes into 91 0 times with a remainder of 91.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 91, we get 91.
Grab the next digit (6) from the dividend, add it to 91, then carry on: 916 / 163

Going ahead to step 3:
916 divided by 163 is 5 with a remainder of 101.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
Deduct 815 from 916 and we're left with 101.
Append the next digit (9) from the dividend to 101 and continue with: 1019 / 163

On to step 4:
When dividing 1019 by 163, we get 6 with a remainder of 41.
Use 6 as the next digit of our solution. 
Result so far: 56.0
Deduct 978 from 1019 and we're left with 41.
Include the next digit (1) from the dividend after 41, then repeat: 411 / 163

Let's proceed to step 5:
The number 163 fits into 411 2 times, leaving a remainder of 85.
Use 2 as the next digit of our solution. 
Result so far: 562.0
The remainder is 85 after subtracting 326 from 411.
Include the next digit (2) from the dividend after 85, then repeat: 852 / 163

Advancing to step 6:
The number 163 fits into 852 5 times, leaving a remainder of 37.
The number 5 becomes the next digit in our result. 
Result so far: 5625.0
If we subtract 815 from 852, we get 37.
Grab the next digit (6) from the dividend, add it to 37, then carry on: 376 / 163

Going ahead to step 7:
The number 163 fits into 376 2 times, leaving a remainder of 50.
The next digit of our result is 2. 
Result so far: 56252.0
If we subtract 326 from 376, we get 50.
Bring next digit (1) of the dividend behind the 50 and repeat the process: 501 / 163

Moving on to step 8:
163 goes into 501 3 times with a remainder of 12.
The next digit of our result is 3. 
Result so far: 562523.0
Subtract 489 from 501 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 9:
The number 163 fits into 120 0 times, leaving a remainder of 120.
Put 0 as the next digit of the answer. 
Result so far: 562523.0
If we take 0 away from 120, we end up with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Advancing to step 10:
When dividing 1200 by 163, we get 7 with a remainder of 59.
Use 7 as the next digit of our solution. 
Result so far: 562523.07
If we take 1141 away from 1200, we end up with 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Advancing to step 11:
163 can be fit into 590 3 times, resulting in a remainder of 101.
The next digit of our result is 3. 
Result so far: 562523.073
Subtracting 489 from 590 leaves us with 101.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1010, and continue the process.

Let's proceed to step 12:
163 can be fit into 1010 6 times, resulting in a remainder of 32.
Write down 6 as next digit of the result. 
Result so far: 562523.0736
Deduct 978 from 1010 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Advancing to step 13:
320 divided by 163 is 1 with a remainder of 157.
Write down 1 as next digit of the result. 
Result so far: 562523.07361
Subtract 163 from 320 to get 157.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1570, and continue the process.

Going ahead to step 14:
163 goes into 1570 9 times with a remainder of 103.
The number 9 becomes the next digit in our result. 
Result so far: 562523.073619
Subtract 1467 from 1570 to get 103.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1030, and continue the process.

Step 15:
163 goes into 1030 6 times with a remainder of 52.
The number 6 becomes the next digit in our result. 
Result so far: 562523.0736196
Subtracting 978 from 1030 leaves us with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Moving on to step 16:
If we divide 520 by 163, we get 3 and a remainder of 31.
The next digit of our result is 3. 
Result so far: 562523.07361963
Subtract 489 from 520 to get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

In conclusion, the division gives 562523.07361963 with a balance of 3.1e-08.