637747 divided by 99 
The aim is to understand the frequency of 99 in 637747.

Going ahead to step 1:
The number 99 fits into 6 0 times, leaving a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Grab the next digit (3) from the dividend, add it to 6, then carry on: 63 / 99

Advancing to step 2:
99 goes into 63 0 times with a remainder of 63.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 63, we end up with 63.
Take the next digit (7) from the dividend and append it to 63, then repeat: 637 / 99

Moving on to step 3:
99 can be fit into 637 6 times, resulting in a remainder of 43.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
If we subtract 594 from 637, we get 43.
Take the next digit (7) from the dividend and append it to 43, then repeat: 437 / 99

Moving on to step 4:
If we divide 437 by 99, we get 4 and a remainder of 41.
The number 4 becomes the next digit in our result. 
Result so far: 64.0
If we take 396 away from 437, we end up with 41.
Bring next digit (4) of the dividend behind the 41 and repeat the process: 414 / 99

Moving on to step 5:
414 divided by 99 is 4 with a remainder of 18.
Put 4 as the next digit of the answer. 
Result so far: 644.0
Subtracting 396 from 414 leaves us with 18.
Take the next digit (7) from the dividend and append it to 18, then repeat: 187 / 99

Let's proceed to step 6:
99 goes into 187 1 times with a remainder of 88.
Put 1 as the next digit of the answer. 
Result so far: 6441.0
Subtracting 99 from 187 leaves us with 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

On to step 7:
If we divide 880 by 99, we get 8 and a remainder of 88.
Write down 8 as next digit of the result. 
Result so far: 6441.8
Subtracting 792 from 880 leaves us with 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

On to step 8:
880 divided by 99 is 8 with a remainder of 88.
Record the quotient 8 as the next digit in the result. 
Result so far: 6441.88
Deduct 792 from 880 and we're left with 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

The final outcome is 6441.88, with a leftover of 0.088.