141915 divided by 91 
The aim is to understand the frequency of 91 in 141915.

On to step 1:
1 divided by 91 is 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Bring next digit (4) of the dividend behind the 1 and repeat the process: 14 / 91

Let's proceed to step 2:
91 goes into 14 0 times with a remainder of 14.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 14, we end up with 14.
Include the next digit (1) from the dividend after 14, then repeat: 141 / 91

Step 3:
When dividing 141 by 91, we get 1 with a remainder of 50.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 50 after subtracting 91 from 141.
Grab the next digit (9) from the dividend, add it to 50, then carry on: 509 / 91

Let's proceed to step 4:
509 divided by 91 is 5 with a remainder of 54.
The next digit of our result is 5. 
Result so far: 15.0
If we take 455 away from 509, we end up with 54.
Append the next digit (1) from the dividend to 54 and continue with: 541 / 91

Advancing to step 5:
If we divide 541 by 91, we get 5 and a remainder of 86.
The number 5 becomes the next digit in our result. 
Result so far: 155.0
The remainder is 86 after subtracting 455 from 541.
Grab the next digit (5) from the dividend, add it to 86, then carry on: 865 / 91

Step 6:
865 divided by 91 is 9 with a remainder of 46.
Record the quotient 9 as the next digit in the result. 
Result so far: 1559.0
Deduct 819 from 865 and we're left with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Going ahead to step 7:
460 divided by 91 is 5 with a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 1559.5
Deduct 455 from 460 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 8:
The number 91 fits into 50 0 times, leaving a remainder of 50.
The number 0 becomes the next digit in our result. 
Result so far: 1559.5
Subtracting 0 from 50 leaves us with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 9:
91 goes into 500 5 times with a remainder of 45.
Write down 5 as next digit of the result. 
Result so far: 1559.505
Subtract 455 from 500 to get 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Advancing to step 10:
When dividing 450 by 91, we get 4 with a remainder of 86.
Write down 4 as next digit of the result. 
Result so far: 1559.5054
Deduct 364 from 450 and we're left with 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

On to step 11:
If we divide 860 by 91, we get 9 and a remainder of 41.
Use 9 as the next digit of our solution. 
Result so far: 1559.50549
Subtracting 819 from 860 leaves us with 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Moving on to step 12:
91 goes into 410 4 times with a remainder of 46.
Write down 4 as next digit of the result. 
Result so far: 1559.505494
If we take 364 away from 410, we end up with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Moving on to step 13:
When dividing 460 by 91, we get 5 with a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 1559.5054945
Subtract 455 from 460 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 14:
When dividing 50 by 91, we get 0 with a remainder of 50.
Write down 0 as next digit of the result. 
Result so far: 1559.5054945
Subtract 0 from 50 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Our division results in 1559.5054945 with a remaining 5e-08.