93398371 divided by 91 
The aim is to understand the frequency of 91 in 93398371.

Let's proceed to step 1:
The number 91 fits into 9 0 times, leaving a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Fetch the next digit (3) from the dividend, attach it to 9 and continue: 93 / 91

On to step 2:
93 divided by 91 is 1 with a remainder of 2.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 2 after subtracting 91 from 93.
Append the next digit (3) from the dividend to 2 and continue with: 23 / 91

Let's proceed to step 3:
If we divide 23 by 91, we get 0 and a remainder of 23.
Write down 0 as next digit of the result. 
Result so far: 10.0
Subtract 0 from 23 to get 23.
Take the next digit (9) from the dividend and append it to 23, then repeat: 239 / 91

Let's proceed to step 4:
The number 91 fits into 239 2 times, leaving a remainder of 57.
Put 2 as the next digit of the answer. 
Result so far: 102.0
If we take 182 away from 239, we end up with 57.
Append the next digit (8) from the dividend to 57 and continue with: 578 / 91

Moving on to step 5:
578 divided by 91 is 6 with a remainder of 32.
Put 6 as the next digit of the answer. 
Result so far: 1026.0
If we take 546 away from 578, we end up with 32.
Fetch the next digit (3) from the dividend, attach it to 32 and continue: 323 / 91

Step 6:
If we divide 323 by 91, we get 3 and a remainder of 50.
Put 3 as the next digit of the answer. 
Result so far: 10263.0
Subtract 273 from 323 to get 50.
Append the next digit (7) from the dividend to 50 and continue with: 507 / 91

Let's proceed to step 7:
507 divided by 91 is 5 with a remainder of 52.
Write down 5 as next digit of the result. 
Result so far: 102635.0
The remainder is 52 after subtracting 455 from 507.
Grab the next digit (1) from the dividend, add it to 52, then carry on: 521 / 91

Moving on to step 8:
91 goes into 521 5 times with a remainder of 66.
Record the quotient 5 as the next digit in the result. 
Result so far: 1026355.0
If we subtract 455 from 521, we 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.

On to step 9:
The number 91 fits into 660 7 times, leaving a remainder of 23.
Record the quotient 7 as the next digit in the result. 
Result so far: 1026355.7
Subtract 637 from 660 to get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Advancing to step 10:
230 divided by 91 is 2 with a remainder of 48.
Use 2 as the next digit of our solution. 
Result so far: 1026355.72
If we take 182 away from 230, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Step 11:
91 goes into 480 5 times with a remainder of 25.
Record the quotient 5 as the next digit in the result. 
Result so far: 1026355.725
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 12:
The number 91 fits into 250 2 times, leaving a remainder of 68.
The next digit of our result is 2. 
Result so far: 1026355.7252
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.

Going ahead to step 13:
91 goes into 680 7 times with a remainder of 43.
Use 7 as the next digit of our solution. 
Result so far: 1026355.72527
Deduct 637 from 680 and we're left with 43.
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 14:
When dividing 430 by 91, we get 4 with a remainder of 66.
Write down 4 as next digit of the result. 
Result so far: 1026355.725274
Deduct 364 from 430 and we're left 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.

Let's proceed to step 15:
660 divided by 91 is 7 with a remainder of 23.
The next digit of our result is 7. 
Result so far: 1026355.7252747
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.

Advancing to step 16:
When dividing 230 by 91, we get 2 with a remainder of 48.
Use 2 as the next digit of our solution. 
Result so far: 1026355.72527472
Deduct 182 from 230 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

The final outcome is 1026355.72527472, with a leftover of 4.8e-08.