35247691 ÷ 91 
The aim is to understand the frequency of 91 in 35247691.

Moving on to step 1:
If we divide 3 by 91, we get 0 and a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Grab the next digit (5) from the dividend, add it to 3, then carry on: 35 / 91

Moving on to step 2:
When dividing 35 by 91, we get 0 with a remainder of 35.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 35 after subtracting 0 from 35.
Grab the next digit (2) from the dividend, add it to 35, then carry on: 352 / 91

Going ahead to step 3:
91 can be fit into 352 3 times, resulting in a remainder of 79.
Put 3 as the next digit of the answer. 
Result so far: 3.0
The remainder is 79 after subtracting 273 from 352.
Grab the next digit (4) from the dividend, add it to 79, then carry on: 794 / 91

Let's proceed to step 4:
91 can be fit into 794 8 times, resulting in a remainder of 66.
Put 8 as the next digit of the answer. 
Result so far: 38.0
Subtracting 728 from 794 leaves us with 66.
Bring next digit (7) of the dividend behind the 66 and repeat the process: 667 / 91

Moving on to step 5:
If we divide 667 by 91, we get 7 and a remainder of 30.
Record the quotient 7 as the next digit in the result. 
Result so far: 387.0
Deduct 637 from 667 and we're left with 30.
Grab the next digit (6) from the dividend, add it to 30, then carry on: 306 / 91

Let's proceed to step 6:
306 divided by 91 is 3 with a remainder of 33.
Record the quotient 3 as the next digit in the result. 
Result so far: 3873.0
If we subtract 273 from 306, we get 33.
Take the next digit (9) from the dividend and append it to 33, then repeat: 339 / 91

Step 7:
If we divide 339 by 91, we get 3 and a remainder of 66.
Write down 3 as next digit of the result. 
Result so far: 38733.0
The remainder is 66 after subtracting 273 from 339.
Include the next digit (1) from the dividend after 66, then repeat: 661 / 91

Let's proceed to step 8:
If we divide 661 by 91, we get 7 and a remainder of 24.
Write down 7 as next digit of the result. 
Result so far: 387337.0
The remainder is 24 after subtracting 637 from 661.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 9:
91 goes into 240 2 times with a remainder of 58.
Put 2 as the next digit of the answer. 
Result so far: 387337.2
Deduct 182 from 240 and we're left with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

On to step 10:
580 divided by 91 is 6 with a remainder of 34.
Write down 6 as next digit of the result. 
Result so far: 387337.26
If we subtract 546 from 580, 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.

Let's proceed to step 11:
91 goes into 340 3 times with a remainder of 67.
The next digit of our result is 3. 
Result so far: 387337.263
If we subtract 273 from 340, we get 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

On to step 12:
670 divided by 91 is 7 with a remainder of 33.
Write down 7 as next digit of the result. 
Result so far: 387337.2637
The remainder is 33 after subtracting 637 from 670.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Advancing to step 13:
91 can be fit into 330 3 times, resulting in a remainder of 57.
The number 3 becomes the next digit in our result. 
Result so far: 387337.26373
Deduct 273 from 330 and we're left with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Advancing to step 14:
The number 91 fits into 570 6 times, leaving a remainder of 24.
The next digit of our result is 6. 
Result so far: 387337.263736
The remainder is 24 after subtracting 546 from 570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Going ahead to step 15:
240 divided by 91 is 2 with a remainder of 58.
The next digit of our result is 2. 
Result so far: 387337.2637362
Subtracting 182 from 240 leaves us with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

On to step 16:
If we divide 580 by 91, we get 6 and a remainder of 34.
Record the quotient 6 as the next digit in the result. 
Result so far: 387337.26373626
The remainder is 34 after subtracting 546 from 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Our division results in 387337.26373626 with a remaining 3.4e-08.