We're dividing 78173272 by 809 
The aim is to understand the frequency of 809 in 78173272.

On to step 1:
809 can be fit into 7 0 times, resulting in a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Fetch the next digit (8) from the dividend, attach it to 7 and continue: 78 / 809

Moving on to step 2:
The number 809 fits into 78 0 times, leaving a remainder of 78.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 78, we end up with 78.
Append the next digit (1) from the dividend to 78 and continue with: 781 / 809

On to step 3:
The number 809 fits into 781 0 times, leaving a remainder of 781.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 781 and we're left with 781.
Append the next digit (7) from the dividend to 781 and continue with: 7817 / 809

Let's proceed to step 4:
7817 divided by 809 is 9 with a remainder of 536.
The next digit of our result is 9. 
Result so far: 9.0
If we take 7281 away from 7817, we end up with 536.
Take the next digit (3) from the dividend and append it to 536, then repeat: 5363 / 809

Let's proceed to step 5:
809 can be fit into 5363 6 times, resulting in a remainder of 509.
Write down 6 as next digit of the result. 
Result so far: 96.0
Subtracting 4854 from 5363 leaves us with 509.
Grab the next digit (2) from the dividend, add it to 509, then carry on: 5092 / 809

Moving on to step 6:
809 can be fit into 5092 6 times, resulting in a remainder of 238.
The next digit of our result is 6. 
Result so far: 966.0
Subtracting 4854 from 5092 leaves us with 238.
Append the next digit (7) from the dividend to 238 and continue with: 2387 / 809

Let's proceed to step 7:
If we divide 2387 by 809, we get 2 and a remainder of 769.
Put 2 as the next digit of the answer. 
Result so far: 9662.0
Subtract 1618 from 2387 to get 769.
Fetch the next digit (2) from the dividend, attach it to 769 and continue: 7692 / 809

Let's proceed to step 8:
When dividing 7692 by 809, we get 9 with a remainder of 411.
Record the quotient 9 as the next digit in the result. 
Result so far: 96629.0
The remainder is 411 after subtracting 7281 from 7692.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4110, and continue the process.

On to step 9:
4110 divided by 809 is 5 with a remainder of 65.
The next digit of our result is 5. 
Result so far: 96629.5
Subtracting 4045 from 4110 leaves us with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

On to step 10:
809 can be fit into 650 0 times, resulting in a remainder of 650.
Write down 0 as next digit of the result. 
Result so far: 96629.5
Subtract 0 from 650 to get 650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6500, and continue the process.

Going ahead to step 11:
6500 divided by 809 is 8 with a remainder of 28.
The number 8 becomes the next digit in our result. 
Result so far: 96629.508
If we subtract 6472 from 6500, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

On to step 12:
If we divide 280 by 809, we get 0 and a remainder of 280.
The next digit of our result is 0. 
Result so far: 96629.508
Subtract 0 from 280 to get 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Step 13:
The number 809 fits into 2800 3 times, leaving a remainder of 373.
Write down 3 as next digit of the result. 
Result so far: 96629.50803
If we subtract 2427 from 2800, we get 373.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3730, and continue the process.

Advancing to step 14:
809 goes into 3730 4 times with a remainder of 494.
Put 4 as the next digit of the answer. 
Result so far: 96629.508034
Subtracting 3236 from 3730 leaves us with 494.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4940, and continue the process.

Let's proceed to step 15:
4940 divided by 809 is 6 with a remainder of 86.
Use 6 as the next digit of our solution. 
Result so far: 96629.5080346
Deduct 4854 from 4940 and we're left with 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

Step 16:
The number 809 fits into 860 1 times, leaving a remainder of 51.
Use 1 as the next digit of our solution. 
Result so far: 96629.50803461
The remainder is 51 after subtracting 809 from 860.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

After the division, we end up with 96629.50803461 and a remainder of 5.1e-08.