Let's divide 923488 by 81
The aim is to understand the frequency of 81 in 923488.

Let's proceed to step 1:
The number 81 fits into 9 0 times, leaving a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Append the next digit (2) from the dividend to 9 and continue with: 92 / 81

Advancing to step 2:
If we divide 92 by 81, we get 1 and a remainder of 11.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 81 from 92 to get 11.
Append the next digit (3) from the dividend to 11 and continue with: 113 / 81

On to step 3:
If we divide 113 by 81, we get 1 and a remainder of 32.
Record the quotient 1 as the next digit in the result. 
Result so far: 11.0
Deduct 81 from 113 and we're left with 32.
Fetch the next digit (4) from the dividend, attach it to 32 and continue: 324 / 81

Let's proceed to step 4:
The number 81 fits into 324 4 times, leaving a remainder of 0.
Use 4 as the next digit of our solution. 
Result so far: 114.0
If we take 324 away from 324, we end up with 0.
Include the next digit (8) from the dividend after 0, then repeat: 8 / 81

Step 5:
The number 81 fits into 8 0 times, leaving a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 1140.0
The remainder is 8 after subtracting 0 from 8.
Bring next digit (8) of the dividend behind the 8 and repeat the process: 88 / 81

On to step 6:
The number 81 fits into 88 1 times, leaving a remainder of 7.
Write down 1 as next digit of the result. 
Result so far: 11401.0
If we subtract 81 from 88, we get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Let's proceed to step 7:
If we divide 70 by 81, we get 0 and a remainder of 70.
Put 0 as the next digit of the answer. 
Result so far: 11401.0
Subtracting 0 from 70 leaves us with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Advancing to step 8:
If we divide 700 by 81, we get 8 and a remainder of 52.
The number 8 becomes the next digit in our result. 
Result so far: 11401.08
Deduct 648 from 700 and we're left with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Going ahead to step 9:
520 divided by 81 is 6 with a remainder of 34.
Use 6 as the next digit of our solution. 
Result so far: 11401.086
Subtracting 486 from 520 leaves us with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Let's proceed to step 10:
81 can be fit into 340 4 times, resulting in a remainder of 16.
Write down 4 as next digit of the result. 
Result so far: 11401.0864
Subtract 324 from 340 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 11:
When dividing 160 by 81, we get 1 with a remainder of 79.
Use 1 as the next digit of our solution. 
Result so far: 11401.08641
Deduct 81 from 160 and we're left with 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Advancing to step 12:
When dividing 790 by 81, we get 9 with a remainder of 61.
Record the quotient 9 as the next digit in the result. 
Result so far: 11401.086419
If we subtract 729 from 790, we get 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Let's proceed to step 13:
81 can be fit into 610 7 times, resulting in a remainder of 43.
Record the quotient 7 as the next digit in the result. 
Result so far: 11401.0864197
Deduct 567 from 610 and we're left with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Advancing to step 14:
The number 81 fits into 430 5 times, leaving a remainder of 25.
The next digit of our result is 5. 
Result so far: 11401.08641975
Subtract 405 from 430 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

The final result is 11401.08641975 with a remainder of 2.5e-08.