We divide 845529 by 81
The aim is to understand the frequency of 81 in 845529.

Moving on to step 1:
81 can be fit into 8 0 times, resulting in a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Grab the next digit (4) from the dividend, add it to 8, then carry on: 84 / 81

Step 2:
81 goes into 84 1 times with a remainder of 3.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 3 after subtracting 81 from 84.
Take the next digit (5) from the dividend and append it to 3, then repeat: 35 / 81

On to step 3:
The number 81 fits into 35 0 times, leaving a remainder of 35.
Write down 0 as next digit of the result. 
Result so far: 10.0
Deduct 0 from 35 and we're left with 35.
Append the next digit (5) from the dividend to 35 and continue with: 355 / 81

Step 4:
The number 81 fits into 355 4 times, leaving a remainder of 31.
The next digit of our result is 4. 
Result so far: 104.0
If we take 324 away from 355, we end up with 31.
Include the next digit (2) from the dividend after 31, then repeat: 312 / 81

Going ahead to step 5:
If we divide 312 by 81, we get 3 and a remainder of 69.
Record the quotient 3 as the next digit in the result. 
Result so far: 1043.0
Deduct 243 from 312 and we're left with 69.
Bring next digit (9) of the dividend behind the 69 and repeat the process: 699 / 81

Going ahead to step 6:
If we divide 699 by 81, we get 8 and a remainder of 51.
Record the quotient 8 as the next digit in the result. 
Result so far: 10438.0
Subtracting 648 from 699 leaves us with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Let's proceed to step 7:
510 divided by 81 is 6 with a remainder of 24.
Put 6 as the next digit of the answer. 
Result so far: 10438.6
Subtract 486 from 510 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Advancing to step 8:
81 can be fit into 240 2 times, resulting in a remainder of 78.
Record the quotient 2 as the next digit in the result. 
Result so far: 10438.62
If we subtract 162 from 240, we get 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Going ahead to step 9:
81 goes into 780 9 times with a remainder of 51.
Use 9 as the next digit of our solution. 
Result so far: 10438.629
If we subtract 729 from 780, we get 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Let's proceed to step 10:
510 divided by 81 is 6 with a remainder of 24.
Use 6 as the next digit of our solution. 
Result so far: 10438.6296
If we take 486 away from 510, we end up with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 11:
When dividing 240 by 81, we get 2 with a remainder of 78.
The number 2 becomes the next digit in our result. 
Result so far: 10438.62962
Subtracting 162 from 240 leaves us with 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Going ahead to step 12:
When dividing 780 by 81, we get 9 with a remainder of 51.
The number 9 becomes the next digit in our result. 
Result so far: 10438.629629
If we subtract 729 from 780, we get 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Let's proceed to step 13:
510 divided by 81 is 6 with a remainder of 24.
Record the quotient 6 as the next digit in the result. 
Result so far: 10438.6296296
Subtract 486 from 510 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Advancing to step 14:
81 can be fit into 240 2 times, resulting in a remainder of 78.
Put 2 as the next digit of the answer. 
Result so far: 10438.62962962
Subtracting 162 from 240 leaves us with 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

The final result is 10438.62962962 with a remainder of 7.8e-08.