We're dividing 16848889 by 80 
The aim is to understand the frequency of 80 in 16848889.

Advancing to step 1:
If we divide 1 by 80, we get 0 and a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Grab the next digit (6) from the dividend, add it to 1, then carry on: 16 / 80

On to step 2:
When dividing 16 by 80, we get 0 with a remainder of 16.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 16 to get 16.
Bring next digit (8) of the dividend behind the 16 and repeat the process: 168 / 80

Advancing to step 3:
The number 80 fits into 168 2 times, leaving a remainder of 8.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we subtract 160 from 168, we get 8.
Grab the next digit (4) from the dividend, add it to 8, then carry on: 84 / 80

On to step 4:
84 divided by 80 is 1 with a remainder of 4.
Put 1 as the next digit of the answer. 
Result so far: 21.0
If we subtract 80 from 84, we get 4.
Include the next digit (8) from the dividend after 4, then repeat: 48 / 80

Step 5:
80 can be fit into 48 0 times, resulting in a remainder of 48.
Write down 0 as next digit of the result. 
Result so far: 210.0
Subtracting 0 from 48 leaves us with 48.
Append the next digit (8) from the dividend to 48 and continue with: 488 / 80

Step 6:
If we divide 488 by 80, we get 6 and a remainder of 8.
Record the quotient 6 as the next digit in the result. 
Result so far: 2106.0
Subtract 480 from 488 to get 8.
Take the next digit (8) from the dividend and append it to 8, then repeat: 88 / 80

Going ahead to step 7:
80 goes into 88 1 times with a remainder of 8.
Record the quotient 1 as the next digit in the result. 
Result so far: 21061.0
The remainder is 8 after subtracting 80 from 88.
Bring next digit (9) of the dividend behind the 8 and repeat the process: 89 / 80

Moving on to step 8:
The number 80 fits into 89 1 times, leaving a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 210611.0
If we take 80 away from 89, we end up with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 9:
90 divided by 80 is 1 with a remainder of 10.
The next digit of our result is 1. 
Result so far: 210611.1
Subtract 80 from 90 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 10:
When dividing 100 by 80, we get 1 with a remainder of 20.
Put 1 as the next digit of the answer. 
Result so far: 210611.11
The remainder is 20 after subtracting 80 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Our division results in 210611.11 with a remaining 0.02.