734686 ÷ 81 
The aim is to understand the frequency of 81 in 734686.

Advancing to step 1:
81 goes into 7 0 times with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Fetch the next digit (3) from the dividend, attach it to 7 and continue: 73 / 81

Going ahead to step 2:
81 goes into 73 0 times with a remainder of 73.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 73 to get 73.
Append the next digit (4) from the dividend to 73 and continue with: 734 / 81

On to step 3:
The number 81 fits into 734 9 times, leaving a remainder of 5.
Put 9 as the next digit of the answer. 
Result so far: 9.0
If we subtract 729 from 734, we get 5.
Bring next digit (6) of the dividend behind the 5 and repeat the process: 56 / 81

Let's proceed to step 4:
If we divide 56 by 81, we get 0 and a remainder of 56.
The number 0 becomes the next digit in our result. 
Result so far: 90.0
If we take 0 away from 56, we end up with 56.
Include the next digit (8) from the dividend after 56, then repeat: 568 / 81

Moving on to step 5:
568 divided by 81 is 7 with a remainder of 1.
Write down 7 as next digit of the result. 
Result so far: 907.0
Subtracting 567 from 568 leaves us with 1.
Take the next digit (6) from the dividend and append it to 1, then repeat: 16 / 81

Moving on to step 6:
16 divided by 81 is 0 with a remainder of 16.
Record the quotient 0 as the next digit in the result. 
Result so far: 9070.0
If we take 0 away from 16, 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.

Step 7:
The number 81 fits into 160 1 times, leaving a remainder of 79.
Put 1 as the next digit of the answer. 
Result so far: 9070.1
The remainder is 79 after subtracting 81 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

On to step 8:
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: 9070.19
Deduct 729 from 790 and we're left with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

On to step 9:
The number 81 fits into 610 7 times, leaving a remainder of 43.
The next digit of our result is 7. 
Result so far: 9070.197
If we take 567 away from 610, we end up 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.

Moving on to step 10:
The number 81 fits into 430 5 times, leaving a remainder of 25.
Use 5 as the next digit of our solution. 
Result so far: 9070.1975
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.

Let's proceed to step 11:
81 can be fit into 250 3 times, resulting in a remainder of 7.
Write down 3 as next digit of the result. 
Result so far: 9070.19753
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.

Going ahead to step 12:
When dividing 70 by 81, we get 0 with a remainder of 70.
Record the quotient 0 as the next digit in the result. 
Result so far: 9070.19753
If we take 0 away from 70, we end up 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.

Going ahead to step 13:
When dividing 700 by 81, we get 8 with a remainder of 52.
Use 8 as the next digit of our solution. 
Result so far: 9070.1975308
The remainder is 52 after subtracting 648 from 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Moving on to step 14:
When dividing 520 by 81, we get 6 with a remainder of 34.
The next digit of our result is 6. 
Result so far: 9070.19753086
The remainder is 34 after subtracting 486 from 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Our division results in 9070.19753086 with a remaining 3.4e-08.