We look at the division of 81389091 by 797 
The aim is to understand the frequency of 797 in 81389091.

Moving on to step 1:
When dividing 8 by 797, we get 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 797

On to step 2:
The number 797 fits into 81 0 times, leaving a remainder of 81.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 81 after subtracting 0 from 81.
Bring next digit (3) of the dividend behind the 81 and repeat the process: 813 / 797

Let's proceed to step 3:
If we divide 813 by 797, we get 1 and a remainder of 16.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 16 after subtracting 797 from 813.
Include the next digit (8) from the dividend after 16, then repeat: 168 / 797

Step 4:
168 divided by 797 is 0 with a remainder of 168.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
Deduct 0 from 168 and we're left with 168.
Append the next digit (9) from the dividend to 168 and continue with: 1689 / 797

Moving on to step 5:
1689 divided by 797 is 2 with a remainder of 95.
Record the quotient 2 as the next digit in the result. 
Result so far: 102.0
Deduct 1594 from 1689 and we're left with 95.
Bring next digit (0) of the dividend behind the 95 and repeat the process: 950 / 797

Going ahead to step 6:
The number 797 fits into 950 1 times, leaving a remainder of 153.
The next digit of our result is 1. 
Result so far: 1021.0
If we take 797 away from 950, we end up with 153.
Include the next digit (9) from the dividend after 153, then repeat: 1539 / 797

Let's proceed to step 7:
1539 divided by 797 is 1 with a remainder of 742.
Use 1 as the next digit of our solution. 
Result so far: 10211.0
If we take 797 away from 1539, we end up with 742.
Append the next digit (1) from the dividend to 742 and continue with: 7421 / 797

Going ahead to step 8:
If we divide 7421 by 797, we get 9 and a remainder of 248.
The number 9 becomes the next digit in our result. 
Result so far: 102119.0
If we subtract 7173 from 7421, we get 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

Moving on to step 9:
2480 divided by 797 is 3 with a remainder of 89.
Put 3 as the next digit of the answer. 
Result so far: 102119.3
Deduct 2391 from 2480 and we're left with 89.
Since there are no more digits in the dividend, we add a zero to the remainder making it 890, and continue the process.

On to step 10:
890 divided by 797 is 1 with a remainder of 93.
Put 1 as the next digit of the answer. 
Result so far: 102119.31
The remainder is 93 after subtracting 797 from 890.
Since there are no more digits in the dividend, we add a zero to the remainder making it 930, and continue the process.

Let's proceed to step 11:
930 divided by 797 is 1 with a remainder of 133.
Use 1 as the next digit of our solution. 
Result so far: 102119.311
The remainder is 133 after subtracting 797 from 930.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1330, and continue the process.

Our division results in 102119.311 with a remaining 0.0133.