436597 ÷ 80 
The aim is to understand the frequency of 80 in 436597.

On to step 1:
If we divide 4 by 80, we get 0 and a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Include the next digit (3) from the dividend after 4, then repeat: 43 / 80

Step 2:
The number 80 fits into 43 0 times, leaving a remainder of 43.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 43 after subtracting 0 from 43.
Append the next digit (6) from the dividend to 43 and continue with: 436 / 80

Advancing to step 3:
If we divide 436 by 80, we get 5 and a remainder of 36.
Write down 5 as next digit of the result. 
Result so far: 5.0
Subtracting 400 from 436 leaves us with 36.
Bring next digit (5) of the dividend behind the 36 and repeat the process: 365 / 80

Step 4:
If we divide 365 by 80, we get 4 and a remainder of 45.
Put 4 as the next digit of the answer. 
Result so far: 54.0
The remainder is 45 after subtracting 320 from 365.
Bring next digit (9) of the dividend behind the 45 and repeat the process: 459 / 80

Going ahead to step 5:
If we divide 459 by 80, we get 5 and a remainder of 59.
The number 5 becomes the next digit in our result. 
Result so far: 545.0
Deduct 400 from 459 and we're left with 59.
Fetch the next digit (7) from the dividend, attach it to 59 and continue: 597 / 80

On to step 6:
80 can be fit into 597 7 times, resulting in a remainder of 37.
Put 7 as the next digit of the answer. 
Result so far: 5457.0
If we subtract 560 from 597, we get 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Step 7:
When dividing 370 by 80, we get 4 with a remainder of 50.
Put 4 as the next digit of the answer. 
Result so far: 5457.4
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 8:
80 can be fit into 500 6 times, resulting in a remainder of 20.
Record the quotient 6 as the next digit in the result. 
Result so far: 5457.46
Deduct 480 from 500 and we're left with 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:
The number 80 fits into 200 2 times, leaving a remainder of 40.
Record the quotient 2 as the next digit in the result. 
Result so far: 5457.462
If we subtract 160 from 200, we 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.

Moving on 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: 5457.4625
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.

Moving on to step 11:
0 divided by 80 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 5457.4625
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.

Step 12:
If we divide 0 by 80, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 5457.4625
Subtract 0 from 0 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.

The final outcome is 5457.4625, with a leftover of 0.0.