We're dividing 19575481 by 909 
The aim is to understand the frequency of 909 in 19575481.

On to step 1:
909 can be fit into 1 0 times, resulting in a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Take the next digit (9) from the dividend and append it to 1, then repeat: 19 / 909

Let's proceed to step 2:
19 divided by 909 is 0 with a remainder of 19.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 19 and we're left with 19.
Take the next digit (5) from the dividend and append it to 19, then repeat: 195 / 909

Going ahead to step 3:
The number 909 fits into 195 0 times, leaving a remainder of 195.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 195 to get 195.
Take the next digit (7) from the dividend and append it to 195, then repeat: 1957 / 909

Advancing to step 4:
When dividing 1957 by 909, we get 2 with a remainder of 139.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtract 1818 from 1957 to get 139.
Append the next digit (5) from the dividend to 139 and continue with: 1395 / 909

Moving on to step 5:
1395 divided by 909 is 1 with a remainder of 486.
Put 1 as the next digit of the answer. 
Result so far: 21.0
Subtract 909 from 1395 to get 486.
Append the next digit (4) from the dividend to 486 and continue with: 4864 / 909

Step 6:
When dividing 4864 by 909, we get 5 with a remainder of 319.
Use 5 as the next digit of our solution. 
Result so far: 215.0
Subtracting 4545 from 4864 leaves us with 319.
Append the next digit (8) from the dividend to 319 and continue with: 3198 / 909

Advancing to step 7:
909 goes into 3198 3 times with a remainder of 471.
The number 3 becomes the next digit in our result. 
Result so far: 2153.0
If we take 2727 away from 3198, we end up with 471.
Take the next digit (1) from the dividend and append it to 471, then repeat: 4711 / 909

On to step 8:
When dividing 4711 by 909, we get 5 with a remainder of 166.
Put 5 as the next digit of the answer. 
Result so far: 21535.0
If we subtract 4545 from 4711, we get 166.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1660, and continue the process.

Moving on to step 9:
When dividing 1660 by 909, we get 1 with a remainder of 751.
The next digit of our result is 1. 
Result so far: 21535.1
If we take 909 away from 1660, we end up with 751.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7510, and continue the process.

Going ahead to step 10:
909 can be fit into 7510 8 times, resulting in a remainder of 238.
Use 8 as the next digit of our solution. 
Result so far: 21535.18
Subtracting 7272 from 7510 leaves us with 238.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2380, and continue the process.

Going ahead to step 11:
When dividing 2380 by 909, we get 2 with a remainder of 562.
The number 2 becomes the next digit in our result. 
Result so far: 21535.182
Deduct 1818 from 2380 and we're left with 562.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5620, and continue the process.

Step 12:
5620 divided by 909 is 6 with a remainder of 166.
Put 6 as the next digit of the answer. 
Result so far: 21535.1826
Deduct 5454 from 5620 and we're left with 166.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1660, and continue the process.

Going ahead to step 13:
909 goes into 1660 1 times with a remainder of 751.
Write down 1 as next digit of the result. 
Result so far: 21535.18261
If we take 909 away from 1660, we end up with 751.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7510, and continue the process.

Advancing to step 14:
If we divide 7510 by 909, we get 8 and a remainder of 238.
Use 8 as the next digit of our solution. 
Result so far: 21535.182618
The remainder is 238 after subtracting 7272 from 7510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2380, and continue the process.

Advancing to step 15:
When dividing 2380 by 909, we get 2 with a remainder of 562.
The next digit of our result is 2. 
Result so far: 21535.1826182
Subtracting 1818 from 2380 leaves us with 562.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5620, and continue the process.

Going ahead to step 16:
The number 909 fits into 5620 6 times, leaving a remainder of 166.
Write down 6 as next digit of the result. 
Result so far: 21535.18261826
If we take 5454 away from 5620, we end up with 166.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1660, and continue the process.

The final outcome is 21535.18261826, with a leftover of 1.66e-07.