80974640 divided by 635 
The aim is to understand the frequency of 635 in 80974640.

Let's proceed to step 1:
635 can be fit into 8 0 times, resulting in a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Grab the next digit (0) from the dividend, add it to 8, then carry on: 80 / 635

Let's proceed to step 2:
635 goes into 80 0 times with a remainder of 80.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 80 to get 80.
Grab the next digit (9) from the dividend, add it to 80, then carry on: 809 / 635

Step 3:
When dividing 809 by 635, we get 1 with a remainder of 174.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 635 from 809 leaves us with 174.
Bring next digit (7) of the dividend behind the 174 and repeat the process: 1747 / 635

Going ahead to step 4:
635 goes into 1747 2 times with a remainder of 477.
Put 2 as the next digit of the answer. 
Result so far: 12.0
Deduct 1270 from 1747 and we're left with 477.
Include the next digit (4) from the dividend after 477, then repeat: 4774 / 635

Advancing to step 5:
635 goes into 4774 7 times with a remainder of 329.
Record the quotient 7 as the next digit in the result. 
Result so far: 127.0
The remainder is 329 after subtracting 4445 from 4774.
Append the next digit (6) from the dividend to 329 and continue with: 3296 / 635

Step 6:
635 goes into 3296 5 times with a remainder of 121.
Use 5 as the next digit of our solution. 
Result so far: 1275.0
If we take 3175 away from 3296, we end up with 121.
Take the next digit (4) from the dividend and append it to 121, then repeat: 1214 / 635

Going ahead to step 7:
1214 divided by 635 is 1 with a remainder of 579.
The number 1 becomes the next digit in our result. 
Result so far: 12751.0
Subtract 635 from 1214 to get 579.
Append the next digit (0) from the dividend to 579 and continue with: 5790 / 635

Moving on to step 8:
If we divide 5790 by 635, we get 9 and a remainder of 75.
The next digit of our result is 9. 
Result so far: 127519.0
Subtract 5715 from 5790 to get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Advancing to step 9:
635 goes into 750 1 times with a remainder of 115.
The number 1 becomes the next digit in our result. 
Result so far: 127519.1
Subtracting 635 from 750 leaves us with 115.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1150, and continue the process.

Moving on to step 10:
The number 635 fits into 1150 1 times, leaving a remainder of 515.
Record the quotient 1 as the next digit in the result. 
Result so far: 127519.11
If we subtract 635 from 1150, we get 515.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5150, and continue the process.

The final outcome is 127519.11, with a leftover of 0.515.