We look at the division of 580953 by 91 
The aim is to understand the frequency of 91 in 580953.

Moving on to step 1:
5 divided by 91 is 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Append the next digit (8) from the dividend to 5 and continue with: 58 / 91

Step 2:
91 goes into 58 0 times with a remainder of 58.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 58 and we're left with 58.
Grab the next digit (0) from the dividend, add it to 58, then carry on: 580 / 91

On to step 3:
91 goes into 580 6 times with a remainder of 34.
Put 6 as the next digit of the answer. 
Result so far: 6.0
Subtract 546 from 580 to get 34.
Fetch the next digit (9) from the dividend, attach it to 34 and continue: 349 / 91

Going ahead to step 4:
91 goes into 349 3 times with a remainder of 76.
Write down 3 as next digit of the result. 
Result so far: 63.0
If we take 273 away from 349, we end up with 76.
Include the next digit (5) from the dividend after 76, then repeat: 765 / 91

Advancing to step 5:
The number 91 fits into 765 8 times, leaving a remainder of 37.
The number 8 becomes the next digit in our result. 
Result so far: 638.0
Subtract 728 from 765 to get 37.
Grab the next digit (3) from the dividend, add it to 37, then carry on: 373 / 91

Moving on to step 6:
91 can be fit into 373 4 times, resulting in a remainder of 9.
Record the quotient 4 as the next digit in the result. 
Result so far: 6384.0
Subtract 364 from 373 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Let's proceed to step 7:
When dividing 90 by 91, we get 0 with a remainder of 90.
Record the quotient 0 as the next digit in the result. 
Result so far: 6384.0
Deduct 0 from 90 and we're left with 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Step 8:
When dividing 900 by 91, we get 9 with a remainder of 81.
Write down 9 as next digit of the result. 
Result so far: 6384.09
Deduct 819 from 900 and we're left with 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

Going ahead to step 9:
The number 91 fits into 810 8 times, leaving a remainder of 82.
Write down 8 as next digit of the result. 
Result so far: 6384.098
The remainder is 82 after subtracting 728 from 810.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Advancing to step 10:
820 divided by 91 is 9 with a remainder of 1.
Put 9 as the next digit of the answer. 
Result so far: 6384.0989
Deduct 819 from 820 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 11:
10 divided by 91 is 0 with a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 6384.0989
Subtract 0 from 10 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 12:
100 divided by 91 is 1 with a remainder of 9.
Write down 1 as next digit of the result. 
Result so far: 6384.098901
If we take 91 away from 100, we end up with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 13:
90 divided by 91 is 0 with a remainder of 90.
Put 0 as the next digit of the answer. 
Result so far: 6384.098901
If we take 0 away from 90, we end up with 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Let's proceed to step 14:
The number 91 fits into 900 9 times, leaving a remainder of 81.
Write down 9 as next digit of the result. 
Result so far: 6384.09890109
Subtract 819 from 900 to get 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

Our division results in 6384.09890109 with a remaining 8.1e-08.