Let's divide 582625 by 81
The aim is to understand the frequency of 81 in 582625.

On to step 1:
When dividing 5 by 81, we get 0 with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Grab the next digit (8) from the dividend, add it to 5, then carry on: 58 / 81

Moving on to step 2:
58 divided by 81 is 0 with a remainder of 58.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 58, we end up with 58.
Append the next digit (2) from the dividend to 58 and continue with: 582 / 81

Going ahead to step 3:
If we divide 582 by 81, we get 7 and a remainder of 15.
Write down 7 as next digit of the result. 
Result so far: 7.0
If we subtract 567 from 582, we get 15.
Grab the next digit (6) from the dividend, add it to 15, then carry on: 156 / 81

Moving on to step 4:
When dividing 156 by 81, we get 1 with a remainder of 75.
Put 1 as the next digit of the answer. 
Result so far: 71.0
The remainder is 75 after subtracting 81 from 156.
Include the next digit (2) from the dividend after 75, then repeat: 752 / 81

Advancing to step 5:
81 can be fit into 752 9 times, resulting in a remainder of 23.
Write down 9 as next digit of the result. 
Result so far: 719.0
The remainder is 23 after subtracting 729 from 752.
Include the next digit (5) from the dividend after 23, then repeat: 235 / 81

On to step 6:
The number 81 fits into 235 2 times, leaving a remainder of 73.
The number 2 becomes the next digit in our result. 
Result so far: 7192.0
Subtract 162 from 235 to 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.

Going ahead to step 7:
81 can be fit into 730 9 times, resulting in a remainder of 1.
Put 9 as the next digit of the answer. 
Result so far: 7192.9
Subtracting 729 from 730 leaves us 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 goes into 10 0 times with a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 7192.9
If we take 0 away from 10, we end up 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.

Step 9:
The number 81 fits into 100 1 times, leaving a remainder of 19.
Use 1 as the next digit of our solution. 
Result so far: 7192.901
The remainder is 19 after subtracting 81 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

On to step 10:
190 divided by 81 is 2 with a remainder of 28.
The next digit of our result is 2. 
Result so far: 7192.9012
The remainder is 28 after subtracting 162 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Let's proceed to step 11:
The number 81 fits into 280 3 times, leaving a remainder of 37.
Use 3 as the next digit of our solution. 
Result so far: 7192.90123
Subtract 243 from 280 to get 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Going ahead to step 12:
81 goes into 370 4 times with a remainder of 46.
The next digit of our result is 4. 
Result so far: 7192.901234
Deduct 324 from 370 and we're left with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

On to step 13:
81 goes into 460 5 times with a remainder of 55.
Put 5 as the next digit of the answer. 
Result so far: 7192.9012345
If we take 405 away from 460, we end up 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.

Advancing to step 14:
When dividing 550 by 81, we get 6 with a remainder of 64.
Write down 6 as next digit of the result. 
Result so far: 7192.90123456
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.

Our division results in 7192.90123456 with a remaining 6.4e-08.