We're dividing 51754719 by 80 
The aim is to understand the frequency of 80 in 51754719.

Going ahead to step 1:
If we divide 5 by 80, we get 0 and a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Include the next digit (1) from the dividend after 5, then repeat: 51 / 80

Going ahead to step 2:
The number 80 fits into 51 0 times, leaving a remainder of 51.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 51 to get 51.
Grab the next digit (7) from the dividend, add it to 51, then carry on: 517 / 80

Let's proceed to step 3:
80 can be fit into 517 6 times, resulting in a remainder of 37.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
Subtracting 480 from 517 leaves us with 37.
Include the next digit (5) from the dividend after 37, then repeat: 375 / 80

Going ahead to step 4:
The number 80 fits into 375 4 times, leaving a remainder of 55.
Put 4 as the next digit of the answer. 
Result so far: 64.0
Subtracting 320 from 375 leaves us with 55.
Bring next digit (4) of the dividend behind the 55 and repeat the process: 554 / 80

Going ahead to step 5:
554 divided by 80 is 6 with a remainder of 74.
Record the quotient 6 as the next digit in the result. 
Result so far: 646.0
The remainder is 74 after subtracting 480 from 554.
Append the next digit (7) from the dividend to 74 and continue with: 747 / 80

Going ahead to step 6:
80 can be fit into 747 9 times, resulting in a remainder of 27.
The number 9 becomes the next digit in our result. 
Result so far: 6469.0
Deduct 720 from 747 and we're left with 27.
Include the next digit (1) from the dividend after 27, then repeat: 271 / 80

On to step 7:
80 can be fit into 271 3 times, resulting in a remainder of 31.
The number 3 becomes the next digit in our result. 
Result so far: 64693.0
If we take 240 away from 271, we end up with 31.
Include the next digit (9) from the dividend after 31, then repeat: 319 / 80

Moving on to step 8:
The number 80 fits into 319 3 times, leaving a remainder of 79.
Write down 3 as next digit of the result. 
Result so far: 646933.0
If we take 240 away from 319, we end up with 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Going ahead to step 9:
80 can be fit into 790 9 times, resulting in a remainder of 70.
Use 9 as the next digit of our solution. 
Result so far: 646933.9
Deduct 720 from 790 and we're left with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Let's proceed to step 10:
When dividing 700 by 80, we get 8 with a remainder of 60.
The number 8 becomes the next digit in our result. 
Result so far: 646933.98
Deduct 640 from 700 and we're left 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.

Let's proceed to step 11:
The number 80 fits into 600 7 times, leaving a remainder of 40.
Use 7 as the next digit of our solution. 
Result so far: 646933.987
The remainder is 40 after subtracting 560 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 12:
80 can be fit into 400 5 times, resulting in a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 646933.9875
If we subtract 400 from 400, 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.

Step 13:
80 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 646933.9875
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 14:
0 divided by 80 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 646933.9875
The remainder is 0 after subtracting 0 from 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 646933.9875 with a remaining 0.0.