We're dividing 54226265 by 646 
Our goal is to divide 54226265 by 646.

Step 1:
646 goes into 5 0 times with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Grab the next digit (4) from the dividend, add it to 5, then carry on: 54 / 646

Let's proceed to step 2:
54 divided by 646 is 0 with a remainder of 54.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 54 after subtracting 0 from 54.
Append the next digit (2) from the dividend to 54 and continue with: 542 / 646

Moving on to step 3:
If we divide 542 by 646, we get 0 and a remainder of 542.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 542, we get 542.
Include the next digit (2) from the dividend after 542, then repeat: 5422 / 646

Going ahead to step 4:
If we divide 5422 by 646, we get 8 and a remainder of 254.
Write down 8 as next digit of the result. 
Result so far: 8.0
If we subtract 5168 from 5422, we get 254.
Append the next digit (6) from the dividend to 254 and continue with: 2546 / 646

Step 5:
If we divide 2546 by 646, we get 3 and a remainder of 608.
The next digit of our result is 3. 
Result so far: 83.0
If we take 1938 away from 2546, we end up with 608.
Fetch the next digit (2) from the dividend, attach it to 608 and continue: 6082 / 646

Advancing to step 6:
646 goes into 6082 9 times with a remainder of 268.
Write down 9 as next digit of the result. 
Result so far: 839.0
If we subtract 5814 from 6082, we get 268.
Grab the next digit (6) from the dividend, add it to 268, then carry on: 2686 / 646

Let's proceed to step 7:
If we divide 2686 by 646, we get 4 and a remainder of 102.
Use 4 as the next digit of our solution. 
Result so far: 8394.0
If we take 2584 away from 2686, we end up with 102.
Bring next digit (5) of the dividend behind the 102 and repeat the process: 1025 / 646

Going ahead to step 8:
If we divide 1025 by 646, we get 1 and a remainder of 379.
Record the quotient 1 as the next digit in the result. 
Result so far: 83941.0
Subtract 646 from 1025 to get 379.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3790, and continue the process.

Going ahead to step 9:
The number 646 fits into 3790 5 times, leaving a remainder of 560.
The next digit of our result is 5. 
Result so far: 83941.5
Deduct 3230 from 3790 and we're left with 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

On to step 10:
5600 divided by 646 is 8 with a remainder of 432.
Put 8 as the next digit of the answer. 
Result so far: 83941.58
The remainder is 432 after subtracting 5168 from 5600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4320, and continue the process.

Going ahead to step 11:
If we divide 4320 by 646, we get 6 and a remainder of 444.
The number 6 becomes the next digit in our result. 
Result so far: 83941.586
If we subtract 3876 from 4320, we get 444.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4440, and continue the process.

Advancing to step 12:
646 can be fit into 4440 6 times, resulting in a remainder of 564.
The next digit of our result is 6. 
Result so far: 83941.5866
If we subtract 3876 from 4440, we get 564.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5640, and continue the process.

The final result is 83941.5866 with a remainder of 0.00564.