We're dividing 75537448 by 809 
The aim is to understand the frequency of 809 in 75537448.

Advancing to step 1:
When dividing 7 by 809, we get 0 with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Bring next digit (5) of the dividend behind the 7 and repeat the process: 75 / 809

Moving on to step 2:
809 goes into 75 0 times with a remainder of 75.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 75 to get 75.
Fetch the next digit (5) from the dividend, attach it to 75 and continue: 755 / 809

Moving on to step 3:
When dividing 755 by 809, we get 0 with a remainder of 755.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 755 and we're left with 755.
Fetch the next digit (3) from the dividend, attach it to 755 and continue: 7553 / 809

Let's proceed to step 4:
7553 divided by 809 is 9 with a remainder of 272.
Put 9 as the next digit of the answer. 
Result so far: 9.0
Deduct 7281 from 7553 and we're left with 272.
Take the next digit (7) from the dividend and append it to 272, then repeat: 2727 / 809

Going ahead to step 5:
If we divide 2727 by 809, we get 3 and a remainder of 300.
Put 3 as the next digit of the answer. 
Result so far: 93.0
If we subtract 2427 from 2727, we get 300.
Bring next digit (4) of the dividend behind the 300 and repeat the process: 3004 / 809

Going ahead to step 6:
When dividing 3004 by 809, we get 3 with a remainder of 577.
Use 3 as the next digit of our solution. 
Result so far: 933.0
The remainder is 577 after subtracting 2427 from 3004.
Include the next digit (4) from the dividend after 577, then repeat: 5774 / 809

Moving on to step 7:
5774 divided by 809 is 7 with a remainder of 111.
Record the quotient 7 as the next digit in the result. 
Result so far: 9337.0
If we subtract 5663 from 5774, we get 111.
Grab the next digit (8) from the dividend, add it to 111, then carry on: 1118 / 809

Step 8:
The number 809 fits into 1118 1 times, leaving a remainder of 309.
Put 1 as the next digit of the answer. 
Result so far: 93371.0
Subtract 809 from 1118 to get 309.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3090, and continue the process.

On to step 9:
When dividing 3090 by 809, we get 3 with a remainder of 663.
Put 3 as the next digit of the answer. 
Result so far: 93371.3
Subtracting 2427 from 3090 leaves us with 663.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6630, and continue the process.

Going ahead to step 10:
809 goes into 6630 8 times with a remainder of 158.
Record the quotient 8 as the next digit in the result. 
Result so far: 93371.38
Subtracting 6472 from 6630 leaves us with 158.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1580, and continue the process.

Going ahead to step 11:
809 goes into 1580 1 times with a remainder of 771.
Write down 1 as next digit of the result. 
Result so far: 93371.381
The remainder is 771 after subtracting 809 from 1580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7710, and continue the process.

Let's proceed to step 12:
If we divide 7710 by 809, we get 9 and a remainder of 429.
Use 9 as the next digit of our solution. 
Result so far: 93371.3819
Deduct 7281 from 7710 and we're left with 429.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4290, and continue the process.

Let's proceed to step 13:
4290 divided by 809 is 5 with a remainder of 245.
Write down 5 as next digit of the result. 
Result so far: 93371.38195
The remainder is 245 after subtracting 4045 from 4290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2450, and continue the process.

Let's proceed to step 14:
809 can be fit into 2450 3 times, resulting in a remainder of 23.
The next digit of our result is 3. 
Result so far: 93371.381953
Deduct 2427 from 2450 and we're left 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.

On to step 15:
If we divide 230 by 809, we get 0 and a remainder of 230.
The number 0 becomes the next digit in our result. 
Result so far: 93371.381953
The remainder is 230 after subtracting 0 from 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Moving on to step 16:
If we divide 2300 by 809, we get 2 and a remainder of 682.
The number 2 becomes the next digit in our result. 
Result so far: 93371.38195302
Subtract 1618 from 2300 to get 682.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6820, and continue the process.

The final result is 93371.38195302 with a remainder of 6.82e-07.