We look at the division of 83135773 by 609 
The aim is to understand the frequency of 609 in 83135773.

On to step 1:
8 divided by 609 is 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Bring next digit (3) of the dividend behind the 8 and repeat the process: 83 / 609

Let's proceed to step 2:
609 can be fit into 83 0 times, resulting in a remainder of 83.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 83, we get 83.
Append the next digit (1) from the dividend to 83 and continue with: 831 / 609

Step 3:
831 divided by 609 is 1 with a remainder of 222.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 609 from 831 and we're left with 222.
Grab the next digit (3) from the dividend, add it to 222, then carry on: 2223 / 609

Advancing to step 4:
If we divide 2223 by 609, we get 3 and a remainder of 396.
Put 3 as the next digit of the answer. 
Result so far: 13.0
Deduct 1827 from 2223 and we're left with 396.
Fetch the next digit (5) from the dividend, attach it to 396 and continue: 3965 / 609

On to step 5:
When dividing 3965 by 609, we get 6 with a remainder of 311.
Write down 6 as next digit of the result. 
Result so far: 136.0
Subtracting 3654 from 3965 leaves us with 311.
Bring next digit (7) of the dividend behind the 311 and repeat the process: 3117 / 609

Let's proceed to step 6:
If we divide 3117 by 609, we get 5 and a remainder of 72.
Write down 5 as next digit of the result. 
Result so far: 1365.0
If we take 3045 away from 3117, we end up with 72.
Include the next digit (7) from the dividend after 72, then repeat: 727 / 609

Advancing to step 7:
If we divide 727 by 609, we get 1 and a remainder of 118.
The next digit of our result is 1. 
Result so far: 13651.0
Deduct 609 from 727 and we're left with 118.
Include the next digit (3) from the dividend after 118, then repeat: 1183 / 609

Advancing to step 8:
609 can be fit into 1183 1 times, resulting in a remainder of 574.
Put 1 as the next digit of the answer. 
Result so far: 136511.0
Deduct 609 from 1183 and we're left with 574.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5740, and continue the process.

Advancing to step 9:
609 can be fit into 5740 9 times, resulting in a remainder of 259.
Put 9 as the next digit of the answer. 
Result so far: 136511.9
If we take 5481 away from 5740, we end up with 259.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2590, and continue the process.

Going ahead to step 10:
The number 609 fits into 2590 4 times, leaving a remainder of 154.
The next digit of our result is 4. 
Result so far: 136511.94
Subtracting 2436 from 2590 leaves us with 154.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1540, and continue the process.

Step 11:
If we divide 1540 by 609, we get 2 and a remainder of 322.
Use 2 as the next digit of our solution. 
Result so far: 136511.942
If we subtract 1218 from 1540, we get 322.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3220, and continue the process.

Advancing to step 12:
3220 divided by 609 is 5 with a remainder of 175.
Record the quotient 5 as the next digit in the result. 
Result so far: 136511.9425
If we subtract 3045 from 3220, we get 175.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1750, and continue the process.

Advancing to step 13:
The number 609 fits into 1750 2 times, leaving a remainder of 532.
The next digit of our result is 2. 
Result so far: 136511.94252
Subtract 1218 from 1750 to get 532.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5320, and continue the process.

Moving on to step 14:
609 can be fit into 5320 8 times, resulting in a remainder of 448.
Record the quotient 8 as the next digit in the result. 
Result so far: 136511.942528
Subtract 4872 from 5320 to get 448.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4480, and continue the process.

On to step 15:
The number 609 fits into 4480 7 times, leaving a remainder of 217.
Use 7 as the next digit of our solution. 
Result so far: 136511.9425287
Subtract 4263 from 4480 to get 217.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2170, and continue the process.

Going ahead to step 16:
2170 divided by 609 is 3 with a remainder of 343.
The next digit of our result is 3. 
Result so far: 136511.94252873
Subtract 1827 from 2170 to get 343.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3430, and continue the process.

The final result is 136511.94252873 with a remainder of 3.43e-07.