We divide 861970 by 80
The aim is to understand the frequency of 80 in 861970.

Going ahead to step 1:
80 can be fit into 8 0 times, resulting in a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Include the next digit (6) from the dividend after 8, then repeat: 86 / 80

On to step 2:
80 goes into 86 1 times with a remainder of 6.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 80 away from 86, we end up with 6.
Append the next digit (1) from the dividend to 6 and continue with: 61 / 80

Advancing to step 3:
The number 80 fits into 61 0 times, leaving a remainder of 61.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
Deduct 0 from 61 and we're left with 61.
Bring next digit (9) of the dividend behind the 61 and repeat the process: 619 / 80

Step 4:
80 goes into 619 7 times with a remainder of 59.
Use 7 as the next digit of our solution. 
Result so far: 107.0
If we take 560 away from 619, we end up with 59.
Include the next digit (7) from the dividend after 59, then repeat: 597 / 80

Let's proceed to step 5:
80 goes into 597 7 times with a remainder of 37.
The next digit of our result is 7. 
Result so far: 1077.0
The remainder is 37 after subtracting 560 from 597.
Fetch the next digit (0) from the dividend, attach it to 37 and continue: 370 / 80

On to step 6:
370 divided by 80 is 4 with a remainder of 50.
Record the quotient 4 as the next digit in the result. 
Result so far: 10774.0
Subtract 320 from 370 to get 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 7:
The number 80 fits into 500 6 times, leaving a remainder of 20.
Use 6 as the next digit of our solution. 
Result so far: 10774.6
The remainder is 20 after subtracting 480 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 8:
80 goes into 200 2 times with a remainder of 40.
Use 2 as the next digit of our solution. 
Result so far: 10774.62
Subtracting 160 from 200 leaves us 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.

Moving on to step 9:
80 can be fit into 400 5 times, resulting in a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 10774.625
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:
80 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 10774.625
If we take 0 away from 0, 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.

Moving on to step 11:
When dividing 0 by 80, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 10774.625
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.

After the division, we end up with 10774.625 and a remainder of 0.0.