Let's divide 485000 by 81
The aim is to understand the frequency of 81 in 485000.

Moving on to step 1:
The number 81 fits into 4 0 times, leaving a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Grab the next digit (8) from the dividend, add it to 4, then carry on: 48 / 81

Moving on to step 2:
81 can be fit into 48 0 times, resulting in a remainder of 48.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 48 and we're left with 48.
Bring next digit (5) of the dividend behind the 48 and repeat the process: 485 / 81

Moving on to step 3:
If we divide 485 by 81, we get 5 and a remainder of 80.
Put 5 as the next digit of the answer. 
Result so far: 5.0
If we take 405 away from 485, we end up with 80.
Fetch the next digit (0) from the dividend, attach it to 80 and continue: 800 / 81

Advancing to step 4:
81 can be fit into 800 9 times, resulting in a remainder of 71.
The next digit of our result is 9. 
Result so far: 59.0
If we take 729 away from 800, we end up with 71.
Bring next digit (0) of the dividend behind the 71 and repeat the process: 710 / 81

Step 5:
When dividing 710 by 81, we get 8 with a remainder of 62.
Record the quotient 8 as the next digit in the result. 
Result so far: 598.0
Deduct 648 from 710 and we're left with 62.
Include the next digit (0) from the dividend after 62, then repeat: 620 / 81

On to step 6:
620 divided by 81 is 7 with a remainder of 53.
Use 7 as the next digit of our solution. 
Result so far: 5987.0
Subtracting 567 from 620 leaves us with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Moving on to step 7:
If we divide 530 by 81, we get 6 and a remainder of 44.
The number 6 becomes the next digit in our result. 
Result so far: 5987.6
Subtracting 486 from 530 leaves us with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

On to step 8:
440 divided by 81 is 5 with a remainder of 35.
The next digit of our result is 5. 
Result so far: 5987.65
Deduct 405 from 440 and we're left with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

On to step 9:
81 goes into 350 4 times with a remainder of 26.
The next digit of our result is 4. 
Result so far: 5987.654
Subtracting 324 from 350 leaves us with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Moving on to step 10:
81 goes into 260 3 times with a remainder of 17.
Put 3 as the next digit of the answer. 
Result so far: 5987.6543
Deduct 243 from 260 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Going ahead to step 11:
When dividing 170 by 81, we get 2 with a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 5987.65432
Subtract 162 from 170 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 12:
If we divide 80 by 81, we get 0 and a remainder of 80.
Write down 0 as next digit of the result. 
Result so far: 5987.65432
The remainder is 80 after subtracting 0 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Let's proceed to step 13:
81 can be fit into 800 9 times, resulting in a remainder of 71.
The next digit of our result is 9. 
Result so far: 5987.6543209
If we take 729 away from 800, we end up with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Going ahead to step 14:
81 can be fit into 710 8 times, resulting in a remainder of 62.
The next digit of our result is 8. 
Result so far: 5987.65432098
Subtract 648 from 710 to get 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

After the division, we end up with 5987.65432098 and a remainder of 6.2e-08.