We're dividing 91131815 by 134 
The aim is to understand the frequency of 134 in 91131815.

Advancing to step 1:
134 can be fit into 9 0 times, resulting in a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Take the next digit (1) from the dividend and append it to 9, then repeat: 91 / 134

On to step 2:
If we divide 91 by 134, we get 0 and a remainder of 91.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 91, we end up with 91.
Append the next digit (1) from the dividend to 91 and continue with: 911 / 134

Advancing to step 3:
When dividing 911 by 134, we get 6 with a remainder of 107.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
Subtract 804 from 911 to get 107.
Grab the next digit (3) from the dividend, add it to 107, then carry on: 1073 / 134

On to step 4:
The number 134 fits into 1073 8 times, leaving a remainder of 1.
The number 8 becomes the next digit in our result. 
Result so far: 68.0
If we take 1072 away from 1073, we end up with 1.
Bring next digit (1) of the dividend behind the 1 and repeat the process: 11 / 134

Step 5:
When dividing 11 by 134, we get 0 with a remainder of 11.
Record the quotient 0 as the next digit in the result. 
Result so far: 680.0
Subtracting 0 from 11 leaves us with 11.
Append the next digit (8) from the dividend to 11 and continue with: 118 / 134

Moving on to step 6:
134 goes into 118 0 times with a remainder of 118.
The next digit of our result is 0. 
Result so far: 6800.0
If we take 0 away from 118, we end up with 118.
Take the next digit (1) from the dividend and append it to 118, then repeat: 1181 / 134

Moving on to step 7:
The number 134 fits into 1181 8 times, leaving a remainder of 109.
Write down 8 as next digit of the result. 
Result so far: 68008.0
Deduct 1072 from 1181 and we're left with 109.
Include the next digit (5) from the dividend after 109, then repeat: 1095 / 134

Let's proceed to step 8:
If we divide 1095 by 134, we get 8 and a remainder of 23.
Record the quotient 8 as the next digit in the result. 
Result so far: 680088.0
Subtracting 1072 from 1095 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.

Moving on to step 9:
When dividing 230 by 134, we get 1 with a remainder of 96.
Write down 1 as next digit of the result. 
Result so far: 680088.1
If we subtract 134 from 230, we get 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

On to step 10:
960 divided by 134 is 7 with a remainder of 22.
Record the quotient 7 as the next digit in the result. 
Result so far: 680088.17
The remainder is 22 after subtracting 938 from 960.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Moving on to step 11:
If we divide 220 by 134, we get 1 and a remainder of 86.
The next digit of our result is 1. 
Result so far: 680088.171
If we subtract 134 from 220, we get 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 12:
If we divide 860 by 134, we get 6 and a remainder of 56.
Use 6 as the next digit of our solution. 
Result so far: 680088.1716
The remainder is 56 after subtracting 804 from 860.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Going ahead to step 13:
560 divided by 134 is 4 with a remainder of 24.
Write down 4 as next digit of the result. 
Result so far: 680088.17164
Subtracting 536 from 560 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 14:
When dividing 240 by 134, we get 1 with a remainder of 106.
Put 1 as the next digit of the answer. 
Result so far: 680088.171641
If we take 134 away from 240, we end up with 106.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1060, and continue the process.

Going ahead to step 15:
If we divide 1060 by 134, we get 7 and a remainder of 122.
Put 7 as the next digit of the answer. 
Result so far: 680088.1716417
Subtracting 938 from 1060 leaves us with 122.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1220, and continue the process.

On to step 16:
When dividing 1220 by 134, we get 9 with a remainder of 14.
The number 9 becomes the next digit in our result. 
Result so far: 680088.17164179
The remainder is 14 after subtracting 1206 from 1220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

After the division, we end up with 680088.17164179 and a remainder of 1.4e-08.