Let's divide 543778 by 80
The aim is to understand the frequency of 80 in 543778.

Let's proceed to step 1:
If we divide 5 by 80, we get 0 and a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Grab the next digit (4) from the dividend, add it to 5, then carry on: 54 / 80

Moving on to step 2:
When dividing 54 by 80, we get 0 with a remainder of 54.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 54 leaves us with 54.
Take the next digit (3) from the dividend and append it to 54, then repeat: 543 / 80

Step 3:
80 goes into 543 6 times with a remainder of 63.
Write down 6 as next digit of the result. 
Result so far: 6.0
The remainder is 63 after subtracting 480 from 543.
Take the next digit (7) from the dividend and append it to 63, then repeat: 637 / 80

Going ahead to step 4:
80 goes into 637 7 times with a remainder of 77.
The number 7 becomes the next digit in our result. 
Result so far: 67.0
If we subtract 560 from 637, we get 77.
Take the next digit (7) from the dividend and append it to 77, then repeat: 777 / 80

Advancing to step 5:
If we divide 777 by 80, we get 9 and a remainder of 57.
The number 9 becomes the next digit in our result. 
Result so far: 679.0
If we take 720 away from 777, we end up with 57.
Append the next digit (8) from the dividend to 57 and continue with: 578 / 80

Let's proceed to step 6:
578 divided by 80 is 7 with a remainder of 18.
The number 7 becomes the next digit in our result. 
Result so far: 6797.0
Subtracting 560 from 578 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Advancing to step 7:
180 divided by 80 is 2 with a remainder of 20.
The number 2 becomes the next digit in our result. 
Result so far: 6797.2
Subtract 160 from 180 to 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.

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: 6797.22
Deduct 160 from 200 and we're left 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.

The final outcome is 6797.22, with a leftover of 0.04.