93604 divided by 91 
The aim is to understand the frequency of 91 in 93604.

Let's proceed to step 1:
If we divide 9 by 91, we get 0 and a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Bring next digit (3) of the dividend behind the 9 and repeat the process: 93 / 91

On to step 2:
91 goes into 93 1 times with a remainder of 2.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 91 from 93 leaves us with 2.
Fetch the next digit (6) from the dividend, attach it to 2 and continue: 26 / 91

Advancing to step 3:
The number 91 fits into 26 0 times, leaving a remainder of 26.
The next digit of our result is 0. 
Result so far: 10.0
If we take 0 away from 26, we end up with 26.
Bring next digit (0) of the dividend behind the 26 and repeat the process: 260 / 91

Let's proceed to step 4:
260 divided by 91 is 2 with a remainder of 78.
Use 2 as the next digit of our solution. 
Result so far: 102.0
If we subtract 182 from 260, we get 78.
Bring next digit (4) of the dividend behind the 78 and repeat the process: 784 / 91

Advancing to step 5:
784 divided by 91 is 8 with a remainder of 56.
The number 8 becomes the next digit in our result. 
Result so far: 1028.0
If we subtract 728 from 784, we get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Let's proceed to step 6:
91 can be fit into 560 6 times, resulting in a remainder of 14.
Use 6 as the next digit of our solution. 
Result so far: 1028.6
If we subtract 546 from 560, we get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 7:
140 divided by 91 is 1 with a remainder of 49.
Put 1 as the next digit of the answer. 
Result so far: 1028.61
Subtracting 91 from 140 leaves us with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Let's proceed to step 8:
490 divided by 91 is 5 with a remainder of 35.
The next digit of our result is 5. 
Result so far: 1028.615
Deduct 455 from 490 and we're left with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Moving on to step 9:
If we divide 350 by 91, we get 3 and a remainder of 77.
Write down 3 as next digit of the result. 
Result so far: 1028.6153
Deduct 273 from 350 and we're left with 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Step 10:
91 can be fit into 770 8 times, resulting in a remainder of 42.
Put 8 as the next digit of the answer. 
Result so far: 1028.61538
Subtract 728 from 770 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.

Advancing to step 11:
If we divide 420 by 91, we get 4 and a remainder of 56.
The next digit of our result is 4. 
Result so far: 1028.615384
The remainder is 56 after subtracting 364 from 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Step 12:
560 divided by 91 is 6 with a remainder of 14.
The number 6 becomes the next digit in our result. 
Result so far: 1028.6153846
If we subtract 546 from 560, we get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 13:
140 divided by 91 is 1 with a remainder of 49.
The number 1 becomes the next digit in our result. 
Result so far: 1028.61538461
Subtracting 91 from 140 leaves us with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

The quotient of the division is 1028.61538461, and the remainder is 4.9e-08.