We look at the division of 80856405 by 800 
The aim is to understand the frequency of 800 in 80856405.

Going ahead to step 1:
The number 800 fits into 8 0 times, leaving a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Bring next digit (0) of the dividend behind the 8 and repeat the process: 80 / 800

On to step 2:
800 goes into 80 0 times with a remainder of 80.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 80 after subtracting 0 from 80.
Grab the next digit (8) from the dividend, add it to 80, then carry on: 808 / 800

Going ahead to step 3:
800 goes into 808 1 times with a remainder of 8.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 800 from 808 leaves us with 8.
Take the next digit (5) from the dividend and append it to 8, then repeat: 85 / 800

Advancing to step 4:
If we divide 85 by 800, we get 0 and a remainder of 85.
Write down 0 as next digit of the result. 
Result so far: 10.0
If we subtract 0 from 85, we get 85.
Bring next digit (6) of the dividend behind the 85 and repeat the process: 856 / 800

Let's proceed to step 5:
800 can be fit into 856 1 times, resulting in a remainder of 56.
Write down 1 as next digit of the result. 
Result so far: 101.0
If we take 800 away from 856, we end up with 56.
Take the next digit (4) from the dividend and append it to 56, then repeat: 564 / 800

On to step 6:
The number 800 fits into 564 0 times, leaving a remainder of 564.
Record the quotient 0 as the next digit in the result. 
Result so far: 1010.0
If we subtract 0 from 564, we get 564.
Bring next digit (0) of the dividend behind the 564 and repeat the process: 5640 / 800

Advancing to step 7:
5640 divided by 800 is 7 with a remainder of 40.
Use 7 as the next digit of our solution. 
Result so far: 10107.0
The remainder is 40 after subtracting 5600 from 5640.
Append the next digit (5) from the dividend to 40 and continue with: 405 / 800

On to step 8:
800 can be fit into 405 0 times, resulting in a remainder of 405.
The next digit of our result is 0. 
Result so far: 101070.0
Subtract 0 from 405 to get 405.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4050, and continue the process.

On to step 9:
4050 divided by 800 is 5 with a remainder of 50.
Write down 5 as next digit of the result. 
Result so far: 101070.5
Subtracting 4000 from 4050 leaves us with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 10:
800 can be fit into 500 0 times, resulting in a remainder of 500.
Put 0 as the next digit of the answer. 
Result so far: 101070.5
The remainder is 500 after subtracting 0 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

Step 11:
800 can be fit into 5000 6 times, resulting in a remainder of 200.
Write down 6 as next digit of the result. 
Result so far: 101070.506
The remainder is 200 after subtracting 4800 from 5000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

On to step 12:
When dividing 2000 by 800, we get 2 with a remainder of 400.
The number 2 becomes the next digit in our result. 
Result so far: 101070.5062
If we take 1600 away from 2000, we end up with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Advancing to step 13:
800 goes into 4000 5 times with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 101070.50625
Subtracting 4000 from 4000 leaves us 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.

On to step 14:
If we divide 0 by 800, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 101070.50625
Subtracting 0 from 0 leaves us 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.

On to step 15:
0 divided by 800 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 101070.50625
Subtracting 0 from 0 leaves us 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.

Our division results in 101070.50625 with a remaining 0.0.