Let's divide 9087909 by 209
The aim is to understand the frequency of 209 in 9087909.

On to step 1:
If we divide 9 by 209, we get 0 and a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Take the next digit (0) from the dividend and append it to 9, then repeat: 90 / 209

Going ahead to step 2:
When dividing 90 by 209, we get 0 with a remainder of 90.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 90 leaves us with 90.
Grab the next digit (8) from the dividend, add it to 90, then carry on: 908 / 209

Going ahead to step 3:
908 divided by 209 is 4 with a remainder of 72.
Write down 4 as next digit of the result. 
Result so far: 4.0
If we subtract 836 from 908, we get 72.
Include the next digit (7) from the dividend after 72, then repeat: 727 / 209

Let's proceed to step 4:
209 goes into 727 3 times with a remainder of 100.
Put 3 as the next digit of the answer. 
Result so far: 43.0
Deduct 627 from 727 and we're left with 100.
Bring next digit (9) of the dividend behind the 100 and repeat the process: 1009 / 209

Going ahead to step 5:
If we divide 1009 by 209, we get 4 and a remainder of 173.
The next digit of our result is 4. 
Result so far: 434.0
If we subtract 836 from 1009, we get 173.
Fetch the next digit (0) from the dividend, attach it to 173 and continue: 1730 / 209

Advancing to step 6:
1730 divided by 209 is 8 with a remainder of 58.
The next digit of our result is 8. 
Result so far: 4348.0
Subtracting 1672 from 1730 leaves us with 58.
Include the next digit (9) from the dividend after 58, then repeat: 589 / 209

Going ahead to step 7:
209 goes into 589 2 times with a remainder of 171.
Put 2 as the next digit of the answer. 
Result so far: 43482.0
Subtracting 418 from 589 leaves us with 171.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1710, and continue the process.

Step 8:
The number 209 fits into 1710 8 times, leaving a remainder of 38.
The number 8 becomes the next digit in our result. 
Result so far: 43482.8
Subtracting 1672 from 1710 leaves us with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Going ahead to step 9:
When dividing 380 by 209, we get 1 with a remainder of 171.
The next digit of our result is 1. 
Result so far: 43482.81
If we take 209 away from 380, we end up with 171.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1710, and continue the process.

Going ahead to step 10:
If we divide 1710 by 209, we get 8 and a remainder of 38.
Write down 8 as next digit of the result. 
Result so far: 43482.818
Subtract 1672 from 1710 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Advancing to step 11:
The number 209 fits into 380 1 times, leaving a remainder of 171.
The number 1 becomes the next digit in our result. 
Result so far: 43482.8181
Deduct 209 from 380 and we're left with 171.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1710, and continue the process.

On to step 12:
209 can be fit into 1710 8 times, resulting in a remainder of 38.
Put 8 as the next digit of the answer. 
Result so far: 43482.81818
If we subtract 1672 from 1710, we get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

On to step 13:
If we divide 380 by 209, we get 1 and a remainder of 171.
The next digit of our result is 1. 
Result so far: 43482.818181
If we subtract 209 from 380, we get 171.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1710, and continue the process.

Step 14:
1710 divided by 209 is 8 with a remainder of 38.
Put 8 as the next digit of the answer. 
Result so far: 43482.8181818
Subtracting 1672 from 1710 leaves us with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Moving on to step 15:
209 can be fit into 380 1 times, resulting in a remainder of 171.
Use 1 as the next digit of our solution. 
Result so far: 43482.81818181
The remainder is 171 after subtracting 209 from 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1710, and continue the process.

Our division results in 43482.81818181 with a remaining 1.71e-07.