Let's divide 280898 by 81
The aim is to understand the frequency of 81 in 280898.

Step 1:
2 divided by 81 is 0 with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Take the next digit (8) from the dividend and append it to 2, then repeat: 28 / 81

Moving on to step 2:
If we divide 28 by 81, we get 0 and a remainder of 28.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 28, we end up with 28.
Grab the next digit (0) from the dividend, add it to 28, then carry on: 280 / 81

Let's proceed to step 3:
The number 81 fits into 280 3 times, leaving a remainder of 37.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we subtract 243 from 280, we get 37.
Bring next digit (8) of the dividend behind the 37 and repeat the process: 378 / 81

Advancing to step 4:
81 can be fit into 378 4 times, resulting in a remainder of 54.
Record the quotient 4 as the next digit in the result. 
Result so far: 34.0
If we take 324 away from 378, we end up with 54.
Append the next digit (9) from the dividend to 54 and continue with: 549 / 81

Advancing to step 5:
The number 81 fits into 549 6 times, leaving a remainder of 63.
Write down 6 as next digit of the result. 
Result so far: 346.0
The remainder is 63 after subtracting 486 from 549.
Fetch the next digit (8) from the dividend, attach it to 63 and continue: 638 / 81

On to step 6:
81 goes into 638 7 times with a remainder of 71.
Use 7 as the next digit of our solution. 
Result so far: 3467.0
The remainder is 71 after subtracting 567 from 638.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Moving on to step 7:
81 goes into 710 8 times with a remainder of 62.
Use 8 as the next digit of our solution. 
Result so far: 3467.8
If we take 648 away from 710, we end up with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Let's proceed to step 8:
When dividing 620 by 81, we get 7 with a remainder of 53.
The next digit of our result is 7. 
Result so far: 3467.87
If we take 567 away from 620, we end up 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.

Step 9:
530 divided by 81 is 6 with a remainder of 44.
The next digit of our result is 6. 
Result so far: 3467.876
If we take 486 away from 530, we end up 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.

Let's proceed to step 10:
81 can be fit into 440 5 times, resulting in a remainder of 35.
The number 5 becomes the next digit in our result. 
Result so far: 3467.8765
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 11:
If we divide 350 by 81, we get 4 and a remainder of 26.
Use 4 as the next digit of our solution. 
Result so far: 3467.87654
If we take 324 away from 350, we end up 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.

On to step 12:
260 divided by 81 is 3 with a remainder of 17.
Record the quotient 3 as the next digit in the result. 
Result so far: 3467.876543
The remainder is 17 after subtracting 243 from 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Advancing to step 13:
If we divide 170 by 81, we get 2 and a remainder of 8.
The number 2 becomes the next digit in our result. 
Result so far: 3467.8765432
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 14:
The number 81 fits into 80 0 times, leaving a remainder of 80.
The next digit of our result is 0. 
Result so far: 3467.8765432
If we take 0 away from 80, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

The final result is 3467.8765432 with a remainder of 8e-08.