We divide 440065 by 81
The aim is to understand the frequency of 81 in 440065.

Advancing to step 1:
If we divide 4 by 81, we get 0 and a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Grab the next digit (4) from the dividend, add it to 4, then carry on: 44 / 81

On to step 2:
The number 81 fits into 44 0 times, leaving a remainder of 44.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 44 to get 44.
Include the next digit (0) from the dividend after 44, then repeat: 440 / 81

On to step 3:
81 can be fit into 440 5 times, resulting in a remainder of 35.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
If we subtract 405 from 440, we get 35.
Include the next digit (0) from the dividend after 35, then repeat: 350 / 81

Let's proceed to step 4:
350 divided by 81 is 4 with a remainder of 26.
The number 4 becomes the next digit in our result. 
Result so far: 54.0
The remainder is 26 after subtracting 324 from 350.
Bring next digit (6) of the dividend behind the 26 and repeat the process: 266 / 81

Moving on to step 5:
If we divide 266 by 81, we get 3 and a remainder of 23.
Record the quotient 3 as the next digit in the result. 
Result so far: 543.0
The remainder is 23 after subtracting 243 from 266.
Bring next digit (5) of the dividend behind the 23 and repeat the process: 235 / 81

Step 6:
When dividing 235 by 81, we get 2 with a remainder of 73.
Write down 2 as next digit of the result. 
Result so far: 5432.0
If we subtract 162 from 235, we get 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Step 7:
When dividing 730 by 81, we get 9 with a remainder of 1.
The next digit of our result is 9. 
Result so far: 5432.9
Deduct 729 from 730 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 8:
81 can be fit into 10 0 times, resulting in a remainder of 10.
The next digit of our result is 0. 
Result so far: 5432.9
Subtracting 0 from 10 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 9:
81 goes into 100 1 times with a remainder of 19.
Record the quotient 1 as the next digit in the result. 
Result so far: 5432.901
Subtract 81 from 100 to get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Moving on to step 10:
If we divide 190 by 81, we get 2 and a remainder of 28.
Use 2 as the next digit of our solution. 
Result so far: 5432.9012
Deduct 162 from 190 and we're left with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Moving on to step 11:
When dividing 280 by 81, we get 3 with a remainder of 37.
The next digit of our result is 3. 
Result so far: 5432.90123
Subtracting 243 from 280 leaves us with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Moving on to step 12:
The number 81 fits into 370 4 times, leaving a remainder of 46.
Write down 4 as next digit of the result. 
Result so far: 5432.901234
The remainder is 46 after subtracting 324 from 370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Moving on to step 13:
When dividing 460 by 81, we get 5 with a remainder of 55.
The next digit of our result is 5. 
Result so far: 5432.9012345
Deduct 405 from 460 and we're left with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

On to step 14:
550 divided by 81 is 6 with a remainder of 64.
The number 6 becomes the next digit in our result. 
Result so far: 5432.90123456
Deduct 486 from 550 and we're left with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

After the division, we end up with 5432.90123456 and a remainder of 6.4e-08.