We're dividing 14859973 by 800 
The aim is to understand the frequency of 800 in 14859973.

Step 1:
800 goes into 1 0 times with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Take the next digit (4) from the dividend and append it to 1, then repeat: 14 / 800

Going ahead to step 2:
When dividing 14 by 800, we get 0 with a remainder of 14.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 14 to get 14.
Take the next digit (8) from the dividend and append it to 14, then repeat: 148 / 800

Going ahead to step 3:
800 can be fit into 148 0 times, resulting in a remainder of 148.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 148 leaves us with 148.
Append the next digit (5) from the dividend to 148 and continue with: 1485 / 800

Moving on to step 4:
1485 divided by 800 is 1 with a remainder of 685.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 800 from 1485, we get 685.
Include the next digit (9) from the dividend after 685, then repeat: 6859 / 800

On to step 5:
The number 800 fits into 6859 8 times, leaving a remainder of 459.
Use 8 as the next digit of our solution. 
Result so far: 18.0
If we take 6400 away from 6859, we end up with 459.
Bring next digit (9) of the dividend behind the 459 and repeat the process: 4599 / 800

Going ahead to step 6:
The number 800 fits into 4599 5 times, leaving a remainder of 599.
The next digit of our result is 5. 
Result so far: 185.0
Subtract 4000 from 4599 to get 599.
Fetch the next digit (7) from the dividend, attach it to 599 and continue: 5997 / 800

On to step 7:
When dividing 5997 by 800, we get 7 with a remainder of 397.
Record the quotient 7 as the next digit in the result. 
Result so far: 1857.0
If we take 5600 away from 5997, we end up with 397.
Grab the next digit (3) from the dividend, add it to 397, then carry on: 3973 / 800

Going ahead to step 8:
The number 800 fits into 3973 4 times, leaving a remainder of 773.
The number 4 becomes the next digit in our result. 
Result so far: 18574.0
Deduct 3200 from 3973 and we're left with 773.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7730, and continue the process.

On to step 9:
800 goes into 7730 9 times with a remainder of 530.
The number 9 becomes the next digit in our result. 
Result so far: 18574.9
If we subtract 7200 from 7730, we get 530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5300, and continue the process.

Let's proceed to step 10:
800 can be fit into 5300 6 times, resulting in a remainder of 500.
Put 6 as the next digit of the answer. 
Result so far: 18574.96
Subtracting 4800 from 5300 leaves us with 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:
When dividing 5000 by 800, we get 6 with a remainder of 200.
Use 6 as the next digit of our solution. 
Result so far: 18574.966
Subtracting 4800 from 5000 leaves us with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

After the division, we end up with 18574.966 and a remainder of 0.02.