We're dividing 813178 by 80 
The aim is to understand the frequency of 80 in 813178.

Going ahead to step 1:
When dividing 8 by 80, we get 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Include the next digit (1) from the dividend after 8, then repeat: 81 / 80

On to step 2:
80 goes into 81 1 times with a remainder of 1.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 80 from 81, we get 1.
Bring next digit (3) of the dividend behind the 1 and repeat the process: 13 / 80

Moving on to step 3:
The number 80 fits into 13 0 times, leaving a remainder of 13.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
If we take 0 away from 13, we end up with 13.
Take the next digit (1) from the dividend and append it to 13, then repeat: 131 / 80

Going ahead to step 4:
131 divided by 80 is 1 with a remainder of 51.
Record the quotient 1 as the next digit in the result. 
Result so far: 101.0
Subtract 80 from 131 to get 51.
Append the next digit (7) from the dividend to 51 and continue with: 517 / 80

On to step 5:
If we divide 517 by 80, we get 6 and a remainder of 37.
Put 6 as the next digit of the answer. 
Result so far: 1016.0
If we subtract 480 from 517, we get 37.
Fetch the next digit (8) from the dividend, attach it to 37 and continue: 378 / 80

Moving on to step 6:
When dividing 378 by 80, we get 4 with a remainder of 58.
Use 4 as the next digit of our solution. 
Result so far: 10164.0
Deduct 320 from 378 and we're left with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Advancing to step 7:
580 divided by 80 is 7 with a remainder of 20.
Write down 7 as next digit of the result. 
Result so far: 10164.7
If we subtract 560 from 580, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 8:
80 goes into 200 2 times with a remainder of 40.
Write down 2 as next digit of the result. 
Result so far: 10164.72
If we take 160 away from 200, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 9:
400 divided by 80 is 5 with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 10164.725
If we take 400 away from 400, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 10:
If we divide 0 by 80, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 10164.725
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 11:
When dividing 0 by 80, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 10164.725
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 10164.725 with a remaining 0.0.