80489998 ÷ 125 
The aim is to understand the frequency of 125 in 80489998.

Let's proceed to step 1:
The number 125 fits into 8 0 times, leaving a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Fetch the next digit (0) from the dividend, attach it to 8 and continue: 80 / 125

Advancing to step 2:
80 divided by 125 is 0 with a remainder of 80.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 80, we get 80.
Append the next digit (4) from the dividend to 80 and continue with: 804 / 125

Advancing to step 3:
When dividing 804 by 125, we get 6 with a remainder of 54.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
Deduct 750 from 804 and we're left with 54.
Bring next digit (8) of the dividend behind the 54 and repeat the process: 548 / 125

On to step 4:
548 divided by 125 is 4 with a remainder of 48.
The number 4 becomes the next digit in our result. 
Result so far: 64.0
Deduct 500 from 548 and we're left with 48.
Fetch the next digit (9) from the dividend, attach it to 48 and continue: 489 / 125

Moving on to step 5:
125 can be fit into 489 3 times, resulting in a remainder of 114.
Put 3 as the next digit of the answer. 
Result so far: 643.0
Subtracting 375 from 489 leaves us with 114.
Include the next digit (9) from the dividend after 114, then repeat: 1149 / 125

Advancing to step 6:
The number 125 fits into 1149 9 times, leaving a remainder of 24.
Record the quotient 9 as the next digit in the result. 
Result so far: 6439.0
The remainder is 24 after subtracting 1125 from 1149.
Include the next digit (9) from the dividend after 24, then repeat: 249 / 125

Advancing to step 7:
125 can be fit into 249 1 times, resulting in a remainder of 124.
The number 1 becomes the next digit in our result. 
Result so far: 64391.0
Deduct 125 from 249 and we're left with 124.
Take the next digit (8) from the dividend and append it to 124, then repeat: 1248 / 125

Advancing to step 8:
When dividing 1248 by 125, we get 9 with a remainder of 123.
Use 9 as the next digit of our solution. 
Result so far: 643919.0
The remainder is 123 after subtracting 1125 from 1248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1230, and continue the process.

Moving on to step 9:
The number 125 fits into 1230 9 times, leaving a remainder of 105.
Put 9 as the next digit of the answer. 
Result so far: 643919.9
Deduct 1125 from 1230 and we're left with 105.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1050, and continue the process.

Step 10:
125 can be fit into 1050 8 times, resulting in a remainder of 50.
The next digit of our result is 8. 
Result so far: 643919.98
Subtracting 1000 from 1050 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.

Moving on to step 11:
When dividing 500 by 125, we get 4 with a remainder of 0.
Put 4 as the next digit of the answer. 
Result so far: 643919.984
Deduct 500 from 500 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 12:
125 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 643919.984
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.

Moving on to step 13:
When dividing 0 by 125, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 643919.984
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 643919.984 with a remaining 0.0.