Let's divide 673729 by 81
The aim is to understand the frequency of 81 in 673729.

Let's proceed to step 1:
6 divided by 81 is 0 with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Include the next digit (7) from the dividend after 6, then repeat: 67 / 81

On to step 2:
81 can be fit into 67 0 times, resulting in a remainder of 67.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 67 to get 67.
Fetch the next digit (3) from the dividend, attach it to 67 and continue: 673 / 81

On to step 3:
81 can be fit into 673 8 times, resulting in a remainder of 25.
Use 8 as the next digit of our solution. 
Result so far: 8.0
If we take 648 away from 673, we end up with 25.
Grab the next digit (7) from the dividend, add it to 25, then carry on: 257 / 81

On to step 4:
If we divide 257 by 81, we get 3 and a remainder of 14.
The next digit of our result is 3. 
Result so far: 83.0
Subtracting 243 from 257 leaves us with 14.
Append the next digit (2) from the dividend to 14 and continue with: 142 / 81

Step 5:
The number 81 fits into 142 1 times, leaving a remainder of 61.
Write down 1 as next digit of the result. 
Result so far: 831.0
If we subtract 81 from 142, we get 61.
Include the next digit (9) from the dividend after 61, then repeat: 619 / 81

Moving on to step 6:
619 divided by 81 is 7 with a remainder of 52.
The number 7 becomes the next digit in our result. 
Result so far: 8317.0
Subtract 567 from 619 to get 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 7:
81 goes into 520 6 times with a remainder of 34.
Put 6 as the next digit of the answer. 
Result so far: 8317.6
Deduct 486 from 520 and we're left 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 8:
When dividing 340 by 81, we get 4 with a remainder of 16.
The next digit of our result is 4. 
Result so far: 8317.64
If we take 324 away from 340, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 9:
160 divided by 81 is 1 with a remainder of 79.
Write down 1 as next digit of the result. 
Result so far: 8317.641
If we subtract 81 from 160, we get 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Step 10:
When dividing 790 by 81, we get 9 with a remainder of 61.
Write down 9 as next digit of the result. 
Result so far: 8317.6419
The remainder is 61 after subtracting 729 from 790.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Going ahead to step 11:
610 divided by 81 is 7 with a remainder of 43.
Write down 7 as next digit of the result. 
Result so far: 8317.64197
Subtract 567 from 610 to get 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Step 12:
81 goes into 430 5 times with a remainder of 25.
Record the quotient 5 as the next digit in the result. 
Result so far: 8317.641975
If we take 405 away from 430, we end up with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Step 13:
81 goes into 250 3 times with a remainder of 7.
The next digit of our result is 3. 
Result so far: 8317.6419753
Deduct 243 from 250 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Step 14:
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: 8317.6419753
The remainder is 70 after subtracting 0 from 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Our division results in 8317.6419753 with a remaining 7e-08.