541658 ÷ 80 
The aim is to understand the frequency of 80 in 541658.

On to step 1:
80 goes into 5 0 times with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Append the next digit (4) from the dividend to 5 and continue with: 54 / 80

Advancing to step 2:
80 goes into 54 0 times with a remainder of 54.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 54 to get 54.
Take the next digit (1) from the dividend and append it to 54, then repeat: 541 / 80

Going ahead to step 3:
When dividing 541 by 80, we get 6 with a remainder of 61.
Write down 6 as next digit of the result. 
Result so far: 6.0
Subtract 480 from 541 to get 61.
Take the next digit (6) from the dividend and append it to 61, then repeat: 616 / 80

Step 4:
If we divide 616 by 80, we get 7 and a remainder of 56.
Use 7 as the next digit of our solution. 
Result so far: 67.0
Subtract 560 from 616 to get 56.
Bring next digit (5) of the dividend behind the 56 and repeat the process: 565 / 80

On to step 5:
80 can be fit into 565 7 times, resulting in a remainder of 5.
Use 7 as the next digit of our solution. 
Result so far: 677.0
Subtract 560 from 565 to get 5.
Fetch the next digit (8) from the dividend, attach it to 5 and continue: 58 / 80

Step 6:
80 goes into 58 0 times with a remainder of 58.
The next digit of our result is 0. 
Result so far: 6770.0
If we subtract 0 from 58, we get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Advancing to step 7:
580 divided by 80 is 7 with a remainder of 20.
Write down 7 as next digit of the result. 
Result so far: 6770.7
The remainder is 20 after subtracting 560 from 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 8:
The number 80 fits into 200 2 times, leaving a remainder of 40.
Use 2 as the next digit of our solution. 
Result so far: 6770.72
The remainder is 40 after subtracting 160 from 200.
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:
If we divide 400 by 80, we get 5 and a remainder of 0.
The next digit of our result is 5. 
Result so far: 6770.725
Deduct 400 from 400 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.

Going ahead to step 10:
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: 6770.725
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.

Let's proceed to 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: 6770.725
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.

Our division results in 6770.725 with a remaining 0.0.