We divide 540911 by 91
The aim is to understand the frequency of 91 in 540911.

Advancing to step 1:
91 can be fit into 5 0 times, resulting in a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Include the next digit (4) from the dividend after 5, then repeat: 54 / 91

On to step 2:
91 goes into 54 0 times with a remainder of 54.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 54 leaves us with 54.
Fetch the next digit (0) from the dividend, attach it to 54 and continue: 540 / 91

Advancing to step 3:
If we divide 540 by 91, we get 5 and a remainder of 85.
The next digit of our result is 5. 
Result so far: 5.0
Subtract 455 from 540 to get 85.
Bring next digit (9) of the dividend behind the 85 and repeat the process: 859 / 91

Advancing to step 4:
If we divide 859 by 91, we get 9 and a remainder of 40.
The next digit of our result is 9. 
Result so far: 59.0
Subtract 819 from 859 to get 40.
Bring next digit (1) of the dividend behind the 40 and repeat the process: 401 / 91

On to step 5:
91 can be fit into 401 4 times, resulting in a remainder of 37.
Put 4 as the next digit of the answer. 
Result so far: 594.0
Subtract 364 from 401 to get 37.
Include the next digit (1) from the dividend after 37, then repeat: 371 / 91

Moving on to step 6:
The number 91 fits into 371 4 times, leaving a remainder of 7.
The number 4 becomes the next digit in our result. 
Result so far: 5944.0
If we take 364 away from 371, we end up with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Going ahead to step 7:
70 divided by 91 is 0 with a remainder of 70.
Write down 0 as next digit of the result. 
Result so far: 5944.0
Subtract 0 from 70 to get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Step 8:
700 divided by 91 is 7 with a remainder of 63.
Record the quotient 7 as the next digit in the result. 
Result so far: 5944.07
Subtract 637 from 700 to get 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Advancing to step 9:
When dividing 630 by 91, we get 6 with a remainder of 84.
Record the quotient 6 as the next digit in the result. 
Result so far: 5944.076
Subtracting 546 from 630 leaves us with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Moving on to step 10:
If we divide 840 by 91, we get 9 and a remainder of 21.
Record the quotient 9 as the next digit in the result. 
Result so far: 5944.0769
Subtract 819 from 840 to get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

On to step 11:
91 goes into 210 2 times with a remainder of 28.
Record the quotient 2 as the next digit in the result. 
Result so far: 5944.07692
The remainder is 28 after subtracting 182 from 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Going ahead to step 12:
The number 91 fits into 280 3 times, leaving a remainder of 7.
Use 3 as the next digit of our solution. 
Result so far: 5944.076923
The remainder is 7 after subtracting 273 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Let's proceed to step 13:
When dividing 70 by 91, we get 0 with a remainder of 70.
The next digit of our result is 0. 
Result so far: 5944.076923
Deduct 0 from 70 and we're left with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Moving on to step 14:
91 goes into 700 7 times with a remainder of 63.
Write down 7 as next digit of the result. 
Result so far: 5944.07692307
Deduct 637 from 700 and we're left with 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

The final result is 5944.07692307 with a remainder of 6.3e-08.