We look at the division of 637176 by 997 
The aim is to understand the frequency of 997 in 637176.

Advancing to step 1:
When dividing 6 by 997, we get 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Include the next digit (3) from the dividend after 6, then repeat: 63 / 997

Moving on to step 2:
997 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
If we take 0 away from 63, we end up with 63.
Fetch the next digit (7) from the dividend, attach it to 63 and continue: 637 / 997

Let's proceed to step 3:
997 goes into 637 0 times with a remainder of 637.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 637 and we're left with 637.
Grab the next digit (1) from the dividend, add it to 637, then carry on: 6371 / 997

Moving on to step 4:
When dividing 6371 by 997, we get 6 with a remainder of 389.
Write down 6 as next digit of the result. 
Result so far: 6.0
Deduct 5982 from 6371 and we're left with 389.
Take the next digit (7) from the dividend and append it to 389, then repeat: 3897 / 997

Advancing to step 5:
997 can be fit into 3897 3 times, resulting in a remainder of 906.
Record the quotient 3 as the next digit in the result. 
Result so far: 63.0
Deduct 2991 from 3897 and we're left with 906.
Include the next digit (6) from the dividend after 906, then repeat: 9066 / 997

Going ahead to step 6:
If we divide 9066 by 997, we get 9 and a remainder of 93.
The number 9 becomes the next digit in our result. 
Result so far: 639.0
If we subtract 8973 from 9066, we get 93.
Since there are no more digits in the dividend, we add a zero to the remainder making it 930, and continue the process.

On to step 7:
930 divided by 997 is 0 with a remainder of 930.
Write down 0 as next digit of the result. 
Result so far: 639.0
The remainder is 930 after subtracting 0 from 930.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9300, and continue the process.

Going ahead to step 8:
9300 divided by 997 is 9 with a remainder of 327.
Put 9 as the next digit of the answer. 
Result so far: 639.09
Subtracting 8973 from 9300 leaves us with 327.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3270, and continue the process.

Going ahead to step 9:
If we divide 3270 by 997, we get 3 and a remainder of 279.
Record the quotient 3 as the next digit in the result. 
Result so far: 639.093
If we take 2991 away from 3270, we end up with 279.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2790, and continue the process.

Going ahead to step 10:
The number 997 fits into 2790 2 times, leaving a remainder of 796.
Record the quotient 2 as the next digit in the result. 
Result so far: 639.0932
The remainder is 796 after subtracting 1994 from 2790.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7960, and continue the process.

Let's proceed to step 11:
If we divide 7960 by 997, we get 7 and a remainder of 981.
Write down 7 as next digit of the result. 
Result so far: 639.09327
The remainder is 981 after subtracting 6979 from 7960.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9810, and continue the process.

On to step 12:
The number 997 fits into 9810 9 times, leaving a remainder of 837.
Record the quotient 9 as the next digit in the result. 
Result so far: 639.093279
The remainder is 837 after subtracting 8973 from 9810.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8370, and continue the process.

Advancing to step 13:
The number 997 fits into 8370 8 times, leaving a remainder of 394.
The next digit of our result is 8. 
Result so far: 639.0932798
Deduct 7976 from 8370 and we're left with 394.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3940, and continue the process.

Advancing to step 14:
3940 divided by 997 is 3 with a remainder of 949.
Use 3 as the next digit of our solution. 
Result so far: 639.09327983
Subtract 2991 from 3940 to get 949.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9490, and continue the process.

Our division results in 639.09327983 with a remaining 9.49e-07.