Let's divide 155979 by 80
The aim is to understand the frequency of 80 in 155979.

Going ahead to step 1:
1 divided by 80 is 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Fetch the next digit (5) from the dividend, attach it to 1 and continue: 15 / 80

On to step 2:
15 divided by 80 is 0 with a remainder of 15.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 15 to get 15.
Fetch the next digit (5) from the dividend, attach it to 15 and continue: 155 / 80

Step 3:
The number 80 fits into 155 1 times, leaving a remainder of 75.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 80 from 155 and we're left with 75.
Append the next digit (9) from the dividend to 75 and continue with: 759 / 80

Let's proceed to step 4:
80 goes into 759 9 times with a remainder of 39.
Use 9 as the next digit of our solution. 
Result so far: 19.0
If we subtract 720 from 759, we get 39.
Append the next digit (7) from the dividend to 39 and continue with: 397 / 80

Advancing to step 5:
If we divide 397 by 80, we get 4 and a remainder of 77.
The number 4 becomes the next digit in our result. 
Result so far: 194.0
Subtracting 320 from 397 leaves us with 77.
Grab the next digit (9) from the dividend, add it to 77, then carry on: 779 / 80

Advancing to step 6:
779 divided by 80 is 9 with a remainder of 59.
The next digit of our result is 9. 
Result so far: 1949.0
If we subtract 720 from 779, we get 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Advancing to step 7:
80 can be fit into 590 7 times, resulting in a remainder of 30.
Use 7 as the next digit of our solution. 
Result so far: 1949.7
Subtracting 560 from 590 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 8:
80 can be fit into 300 3 times, resulting in a remainder of 60.
Write down 3 as next digit of the result. 
Result so far: 1949.73
Subtract 240 from 300 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Moving on to step 9:
80 can be fit into 600 7 times, resulting in a remainder of 40.
The number 7 becomes the next digit in our result. 
Result so far: 1949.737
Subtract 560 from 600 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 10:
If we divide 400 by 80, we get 5 and a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 1949.7375
Subtract 400 from 400 to 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.

Let's proceed to step 11:
When dividing 0 by 80, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 1949.7375
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.

Step 12:
80 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 1949.7375
Deduct 0 from 0 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.

The final outcome is 1949.7375, with a leftover of 0.0.