85364140 divided by 91 
The aim is to understand the frequency of 91 in 85364140.

Let's proceed to step 1:
8 divided by 91 is 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Bring next digit (5) of the dividend behind the 8 and repeat the process: 85 / 91

Step 2:
91 can be fit into 85 0 times, resulting in a remainder of 85.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 85 and we're left with 85.
Take the next digit (3) from the dividend and append it to 85, then repeat: 853 / 91

Let's proceed to step 3:
If we divide 853 by 91, we get 9 and a remainder of 34.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
Deduct 819 from 853 and we're left with 34.
Take the next digit (6) from the dividend and append it to 34, then repeat: 346 / 91

Advancing to step 4:
If we divide 346 by 91, we get 3 and a remainder of 73.
The next digit of our result is 3. 
Result so far: 93.0
Deduct 273 from 346 and we're left with 73.
Include the next digit (4) from the dividend after 73, then repeat: 734 / 91

Let's proceed to step 5:
When dividing 734 by 91, we get 8 with a remainder of 6.
Record the quotient 8 as the next digit in the result. 
Result so far: 938.0
Deduct 728 from 734 and we're left with 6.
Append the next digit (1) from the dividend to 6 and continue with: 61 / 91

Advancing to step 6:
91 goes into 61 0 times with a remainder of 61.
Use 0 as the next digit of our solution. 
Result so far: 9380.0
The remainder is 61 after subtracting 0 from 61.
Include the next digit (4) from the dividend after 61, then repeat: 614 / 91

Moving on to step 7:
When dividing 614 by 91, we get 6 with a remainder of 68.
Put 6 as the next digit of the answer. 
Result so far: 93806.0
Subtracting 546 from 614 leaves us with 68.
Grab the next digit (0) from the dividend, add it to 68, then carry on: 680 / 91

Moving on to step 8:
When dividing 680 by 91, we get 7 with a remainder of 43.
Record the quotient 7 as the next digit in the result. 
Result so far: 938067.0
If we subtract 637 from 680, we get 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Let's proceed to step 9:
91 goes into 430 4 times with a remainder of 66.
The next digit of our result is 4. 
Result so far: 938067.4
Subtract 364 from 430 to get 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Moving on to step 10:
91 can be fit into 660 7 times, resulting in a remainder of 23.
Put 7 as the next digit of the answer. 
Result so far: 938067.47
Subtracting 637 from 660 leaves us with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

On to step 11:
If we divide 230 by 91, we get 2 and a remainder of 48.
The number 2 becomes the next digit in our result. 
Result so far: 938067.472
The remainder is 48 after subtracting 182 from 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

On to step 12:
The number 91 fits into 480 5 times, leaving a remainder of 25.
Put 5 as the next digit of the answer. 
Result so far: 938067.4725
Deduct 455 from 480 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 13:
The number 91 fits into 250 2 times, leaving a remainder of 68.
Write down 2 as next digit of the result. 
Result so far: 938067.47252
Subtracting 182 from 250 leaves us with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Step 14:
The number 91 fits into 680 7 times, leaving a remainder of 43.
Use 7 as the next digit of our solution. 
Result so far: 938067.472527
The remainder is 43 after subtracting 637 from 680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Going ahead to step 15:
430 divided by 91 is 4 with a remainder of 66.
The number 4 becomes the next digit in our result. 
Result so far: 938067.4725274
Subtracting 364 from 430 leaves us with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Advancing to step 16:
The number 91 fits into 660 7 times, leaving a remainder of 23.
The number 7 becomes the next digit in our result. 
Result so far: 938067.47252747
Subtracting 637 from 660 leaves us with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Our division results in 938067.47252747 with a remaining 2.3e-08.