787718 divided by 80 
The aim is to understand the frequency of 80 in 787718.

Step 1:
The number 80 fits into 7 0 times, leaving a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Take the next digit (8) from the dividend and append it to 7, then repeat: 78 / 80

Let's proceed to step 2:
When dividing 78 by 80, we get 0 with a remainder of 78.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 78 and we're left with 78.
Append the next digit (7) from the dividend to 78 and continue with: 787 / 80

Going ahead to step 3:
80 goes into 787 9 times with a remainder of 67.
Use 9 as the next digit of our solution. 
Result so far: 9.0
If we subtract 720 from 787, we get 67.
Fetch the next digit (7) from the dividend, attach it to 67 and continue: 677 / 80

Going ahead to step 4:
If we divide 677 by 80, we get 8 and a remainder of 37.
Put 8 as the next digit of the answer. 
Result so far: 98.0
The remainder is 37 after subtracting 640 from 677.
Fetch the next digit (1) from the dividend, attach it to 37 and continue: 371 / 80

Let's proceed to step 5:
80 goes into 371 4 times with a remainder of 51.
Put 4 as the next digit of the answer. 
Result so far: 984.0
If we take 320 away from 371, we end up with 51.
Take the next digit (8) from the dividend and append it to 51, then repeat: 518 / 80

Advancing to step 6:
The number 80 fits into 518 6 times, leaving a remainder of 38.
Record the quotient 6 as the next digit in the result. 
Result so far: 9846.0
If we take 480 away from 518, we end up with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Moving on to step 7:
If we divide 380 by 80, we get 4 and a remainder of 60.
Record the quotient 4 as the next digit in the result. 
Result so far: 9846.4
If we take 320 away from 380, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 8:
If we divide 600 by 80, we get 7 and a remainder of 40.
Write down 7 as next digit of the result. 
Result so far: 9846.47
Deduct 560 from 600 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.

Let's proceed to step 9:
The number 80 fits into 400 5 times, leaving a remainder of 0.
The next digit of our result is 5. 
Result so far: 9846.475
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.

Moving on to step 10:
When dividing 0 by 80, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 9846.475
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.

Going ahead to step 11:
0 divided by 80 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 9846.475
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.

The quotient of the division is 9846.475, and the remainder is 0.0.