Let's divide 225410 by 81
The aim is to understand the frequency of 81 in 225410.

Let's proceed to step 1:
If we divide 2 by 81, we get 0 and a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Grab the next digit (2) from the dividend, add it to 2, then carry on: 22 / 81

Advancing to step 2:
81 can be fit into 22 0 times, resulting in a remainder of 22.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 22 to get 22.
Fetch the next digit (5) from the dividend, attach it to 22 and continue: 225 / 81

Step 3:
225 divided by 81 is 2 with a remainder of 63.
The next digit of our result is 2. 
Result so far: 2.0
Deduct 162 from 225 and we're left with 63.
Take the next digit (4) from the dividend and append it to 63, then repeat: 634 / 81

Moving on to step 4:
If we divide 634 by 81, we get 7 and a remainder of 67.
The number 7 becomes the next digit in our result. 
Result so far: 27.0
If we subtract 567 from 634, we get 67.
Bring next digit (1) of the dividend behind the 67 and repeat the process: 671 / 81

Moving on to step 5:
If we divide 671 by 81, we get 8 and a remainder of 23.
Record the quotient 8 as the next digit in the result. 
Result so far: 278.0
Subtract 648 from 671 to get 23.
Append the next digit (0) from the dividend to 23 and continue with: 230 / 81

Moving on to step 6:
81 can be fit into 230 2 times, resulting in a remainder of 68.
The next digit of our result is 2. 
Result so far: 2782.0
Subtract 162 from 230 to get 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Advancing to step 7:
If we divide 680 by 81, we get 8 and a remainder of 32.
Record the quotient 8 as the next digit in the result. 
Result so far: 2782.8
If we subtract 648 from 680, we get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Advancing to step 8:
81 can be fit into 320 3 times, resulting in a remainder of 77.
Put 3 as the next digit of the answer. 
Result so far: 2782.83
If we subtract 243 from 320, we get 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Advancing to step 9:
770 divided by 81 is 9 with a remainder of 41.
Record the quotient 9 as the next digit in the result. 
Result so far: 2782.839
Deduct 729 from 770 and we're left with 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Step 10:
When dividing 410 by 81, we get 5 with a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 2782.8395
Subtract 405 from 410 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 11:
The number 81 fits into 50 0 times, leaving a remainder of 50.
The number 0 becomes the next digit in our result. 
Result so far: 2782.8395
If we subtract 0 from 50, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Let's proceed to step 12:
81 can be fit into 500 6 times, resulting in a remainder of 14.
The number 6 becomes the next digit in our result. 
Result so far: 2782.839506
If we take 486 away from 500, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Advancing to step 13:
The number 81 fits into 140 1 times, leaving a remainder of 59.
The number 1 becomes the next digit in our result. 
Result so far: 2782.8395061
Deduct 81 from 140 and we're left with 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Advancing to step 14:
81 can be fit into 590 7 times, resulting in a remainder of 23.
The next digit of our result is 7. 
Result so far: 2782.83950617
Subtract 567 from 590 to get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Our division results in 2782.83950617 with a remaining 2.3e-08.