We look at the division of 637437 by 80 
The aim is to understand the frequency of 80 in 637437.

Step 1:
When dividing 6 by 80, we get 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Bring next digit (3) of the dividend behind the 6 and repeat the process: 63 / 80

Going ahead to step 2:
80 can be fit into 63 0 times, resulting in a remainder of 63.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 63 after subtracting 0 from 63.
Include the next digit (7) from the dividend after 63, then repeat: 637 / 80

Moving on to step 3:
637 divided by 80 is 7 with a remainder of 77.
Put 7 as the next digit of the answer. 
Result so far: 7.0
Subtract 560 from 637 to get 77.
Fetch the next digit (4) from the dividend, attach it to 77 and continue: 774 / 80

Advancing to step 4:
The number 80 fits into 774 9 times, leaving a remainder of 54.
The next digit of our result is 9. 
Result so far: 79.0
The remainder is 54 after subtracting 720 from 774.
Include the next digit (3) from the dividend after 54, then repeat: 543 / 80

On to step 5:
When dividing 543 by 80, we get 6 with a remainder of 63.
The next digit of our result is 6. 
Result so far: 796.0
If we take 480 away from 543, we end up with 63.
Take the next digit (7) from the dividend and append it to 63, then repeat: 637 / 80

Let's proceed to step 6:
80 can be fit into 637 7 times, resulting in a remainder of 77.
The number 7 becomes the next digit in our result. 
Result so far: 7967.0
The remainder is 77 after subtracting 560 from 637.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Moving on to step 7:
80 can be fit into 770 9 times, resulting in a remainder of 50.
Write down 9 as next digit of the result. 
Result so far: 7967.9
Deduct 720 from 770 and we're left with 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:
When dividing 500 by 80, we get 6 with a remainder of 20.
Write down 6 as next digit of the result. 
Result so far: 7967.96
Subtracting 480 from 500 leaves us 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: 7967.962
If we take 160 away from 200, we end up 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.

Advancing to step 10:
80 can be fit into 400 5 times, resulting in a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 7967.9625
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.

Let's proceed to step 11:
0 divided by 80 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 7967.9625
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.

Let's proceed to step 12:
When dividing 0 by 80, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 7967.9625
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.

The final outcome is 7967.9625, with a leftover of 0.0.