212454 divided by 81 
We want to figure out the number of times 212454 can be divided by 81.

On to step 1:
2 divided by 81 is 0 with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 81

Going ahead to step 2:
81 can be fit into 21 0 times, resulting in a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Take the next digit (2) from the dividend and append it to 21, then repeat: 212 / 81

Moving on to step 3:
When dividing 212 by 81, we get 2 with a remainder of 50.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we subtract 162 from 212, we get 50.
Append the next digit (4) from the dividend to 50 and continue with: 504 / 81

Step 4:
The number 81 fits into 504 6 times, leaving a remainder of 18.
Use 6 as the next digit of our solution. 
Result so far: 26.0
Subtracting 486 from 504 leaves us with 18.
Bring next digit (5) of the dividend behind the 18 and repeat the process: 185 / 81

Let's proceed to step 5:
The number 81 fits into 185 2 times, leaving a remainder of 23.
Put 2 as the next digit of the answer. 
Result so far: 262.0
If we take 162 away from 185, we end up with 23.
Grab the next digit (4) from the dividend, add it to 23, then carry on: 234 / 81

Let's proceed to step 6:
81 goes into 234 2 times with a remainder of 72.
The next digit of our result is 2. 
Result so far: 2622.0
Deduct 162 from 234 and we're left with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

On to step 7:
When dividing 720 by 81, we get 8 with a remainder of 72.
Write down 8 as next digit of the result. 
Result so far: 2622.8
If we subtract 648 from 720, we get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

On to step 8:
81 goes into 720 8 times with a remainder of 72.
The next digit of our result is 8. 
Result so far: 2622.88
If we subtract 648 from 720, we get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

The final outcome is 2622.88, with a leftover of 0.072.