We look at the division of 913410 by 91 
The aim is to understand the frequency of 91 in 913410.

Let's proceed to step 1:
The number 91 fits into 9 0 times, leaving a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Bring next digit (1) of the dividend behind the 9 and repeat the process: 91 / 91

Let's proceed to step 2:
The number 91 fits into 91 1 times, leaving a remainder of 0.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 91 from 91 leaves us with 0.
Append the next digit (3) from the dividend to 0 and continue with: 3 / 91

Advancing to step 3:
When dividing 3 by 91, we get 0 with a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
If we subtract 0 from 3, we get 3.
Append the next digit (4) from the dividend to 3 and continue with: 34 / 91

Step 4:
34 divided by 91 is 0 with a remainder of 34.
Put 0 as the next digit of the answer. 
Result so far: 100.0
Deduct 0 from 34 and we're left with 34.
Include the next digit (1) from the dividend after 34, then repeat: 341 / 91

On to step 5:
The number 91 fits into 341 3 times, leaving a remainder of 68.
Put 3 as the next digit of the answer. 
Result so far: 1003.0
Deduct 273 from 341 and we're left with 68.
Fetch the next digit (0) from the dividend, attach it to 68 and continue: 680 / 91

Moving on to step 6:
When dividing 680 by 91, we get 7 with a remainder of 43.
Put 7 as the next digit of the answer. 
Result so far: 10037.0
Subtract 637 from 680 to 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 7:
91 can be fit into 430 4 times, resulting in a remainder of 66.
Write down 4 as next digit of the result. 
Result so far: 10037.4
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 8:
660 divided by 91 is 7 with a remainder of 23.
Use 7 as the next digit of our solution. 
Result so far: 10037.47
The remainder is 23 after subtracting 637 from 660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Step 9:
If we divide 230 by 91, we get 2 and a remainder of 48.
Put 2 as the next digit of the answer. 
Result so far: 10037.472
Subtract 182 from 230 to get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Let's proceed to step 10:
480 divided by 91 is 5 with a remainder of 25.
Use 5 as the next digit of our solution. 
Result so far: 10037.4725
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 11:
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: 10037.47252
If we take 182 away from 250, we end up 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.

Let's proceed to step 12:
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: 10037.472527
Subtract 637 from 680 to 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.

Going ahead to step 13:
When dividing 430 by 91, we get 4 with a remainder of 66.
Record the quotient 4 as the next digit in the result. 
Result so far: 10037.4725274
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 14:
91 can be fit into 660 7 times, resulting in a remainder of 23.
Write down 7 as next digit of the result. 
Result so far: 10037.47252747
If we subtract 637 from 660, we 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.

In conclusion, the division gives 10037.47252747 with a balance of 2.3e-08.