We look at the division of 89210389 by 135 
The aim is to understand the frequency of 135 in 89210389.

Moving on to step 1:
When dividing 8 by 135, we get 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Grab the next digit (9) from the dividend, add it to 8, then carry on: 89 / 135

Let's proceed to step 2:
135 can be fit into 89 0 times, resulting in a remainder of 89.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 89, we get 89.
Append the next digit (2) from the dividend to 89 and continue with: 892 / 135

Step 3:
If we divide 892 by 135, we get 6 and a remainder of 82.
Use 6 as the next digit of our solution. 
Result so far: 6.0
The remainder is 82 after subtracting 810 from 892.
Grab the next digit (1) from the dividend, add it to 82, then carry on: 821 / 135

Advancing to step 4:
The number 135 fits into 821 6 times, leaving a remainder of 11.
Put 6 as the next digit of the answer. 
Result so far: 66.0
Deduct 810 from 821 and we're left with 11.
Include the next digit (0) from the dividend after 11, then repeat: 110 / 135

On to step 5:
135 can be fit into 110 0 times, resulting in a remainder of 110.
Use 0 as the next digit of our solution. 
Result so far: 660.0
Deduct 0 from 110 and we're left with 110.
Include the next digit (3) from the dividend after 110, then repeat: 1103 / 135

Step 6:
135 can be fit into 1103 8 times, resulting in a remainder of 23.
Put 8 as the next digit of the answer. 
Result so far: 6608.0
The remainder is 23 after subtracting 1080 from 1103.
Append the next digit (8) from the dividend to 23 and continue with: 238 / 135

Step 7:
The number 135 fits into 238 1 times, leaving a remainder of 103.
The next digit of our result is 1. 
Result so far: 66081.0
Deduct 135 from 238 and we're left with 103.
Grab the next digit (9) from the dividend, add it to 103, then carry on: 1039 / 135

Moving on to step 8:
1039 divided by 135 is 7 with a remainder of 94.
Record the quotient 7 as the next digit in the result. 
Result so far: 660817.0
Deduct 945 from 1039 and we're left with 94.
Since there are no more digits in the dividend, we add a zero to the remainder making it 940, and continue the process.

Let's proceed to step 9:
When dividing 940 by 135, we get 6 with a remainder of 130.
The next digit of our result is 6. 
Result so far: 660817.6
Subtract 810 from 940 to get 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

Moving on to step 10:
When dividing 1300 by 135, we get 9 with a remainder of 85.
Record the quotient 9 as the next digit in the result. 
Result so far: 660817.69
Subtract 1215 from 1300 to get 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Step 11:
135 goes into 850 6 times with a remainder of 40.
The number 6 becomes the next digit in our result. 
Result so far: 660817.696
The remainder is 40 after subtracting 810 from 850.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 12:
When dividing 400 by 135, we get 2 with a remainder of 130.
Use 2 as the next digit of our solution. 
Result so far: 660817.6962
Deduct 270 from 400 and we're left with 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

Going ahead to step 13:
135 goes into 1300 9 times with a remainder of 85.
Write down 9 as next digit of the result. 
Result so far: 660817.69629
Subtracting 1215 from 1300 leaves us with 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Advancing to step 14:
The number 135 fits into 850 6 times, leaving a remainder of 40.
The number 6 becomes the next digit in our result. 
Result so far: 660817.696296
Deduct 810 from 850 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 15:
When dividing 400 by 135, we get 2 with a remainder of 130.
Record the quotient 2 as the next digit in the result. 
Result so far: 660817.6962962
If we take 270 away from 400, we end up with 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

Moving on to step 16:
1300 divided by 135 is 9 with a remainder of 85.
The number 9 becomes the next digit in our result. 
Result so far: 660817.69629629
If we take 1215 away from 1300, we end up with 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

The final result is 660817.69629629 with a remainder of 8.5e-08.