359789 divided by 80 
The aim is to understand the frequency of 80 in 359789.

Going ahead to step 1:
When dividing 3 by 80, we get 0 with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Fetch the next digit (5) from the dividend, attach it to 3 and continue: 35 / 80

Advancing to step 2:
The number 80 fits into 35 0 times, leaving a remainder of 35.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 35, we get 35.
Include the next digit (9) from the dividend after 35, then repeat: 359 / 80

Going ahead to step 3:
80 goes into 359 4 times with a remainder of 39.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Subtract 320 from 359 to get 39.
Grab the next digit (7) from the dividend, add it to 39, then carry on: 397 / 80

Let's proceed to step 4:
397 divided by 80 is 4 with a remainder of 77.
The number 4 becomes the next digit in our result. 
Result so far: 44.0
If we take 320 away from 397, we end up with 77.
Take the next digit (8) from the dividend and append it to 77, then repeat: 778 / 80

Advancing to step 5:
When dividing 778 by 80, we get 9 with a remainder of 58.
Use 9 as the next digit of our solution. 
Result so far: 449.0
The remainder is 58 after subtracting 720 from 778.
Bring next digit (9) of the dividend behind the 58 and repeat the process: 589 / 80

Let's proceed to step 6:
When dividing 589 by 80, we get 7 with a remainder of 29.
Use 7 as the next digit of our solution. 
Result so far: 4497.0
If we subtract 560 from 589, we get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Let's proceed to step 7:
If we divide 290 by 80, we get 3 and a remainder of 50.
The number 3 becomes the next digit in our result. 
Result so far: 4497.3
If we subtract 240 from 290, we 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 8:
80 can be fit into 500 6 times, resulting in a remainder of 20.
Put 6 as the next digit of the answer. 
Result so far: 4497.36
If we subtract 480 from 500, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 9:
When dividing 200 by 80, we get 2 with a remainder of 40.
Write down 2 as next digit of the result. 
Result so far: 4497.362
If we take 160 away from 200, we end up 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.

Going ahead to step 10:
When dividing 400 by 80, we get 5 with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 4497.3625
The remainder is 0 after subtracting 400 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 11:
If we divide 0 by 80, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 4497.3625
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.

Going ahead to step 12:
80 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 4497.3625
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 quotient of the division is 4497.3625, and the remainder is 0.0.