54640316 ÷ 823 
Our goal is to divide 54640316 by 823.

Going ahead to step 1:
5 divided by 823 is 0 with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Grab the next digit (4) from the dividend, add it to 5, then carry on: 54 / 823

Advancing to step 2:
823 can be fit into 54 0 times, resulting in a remainder of 54.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 54, we get 54.
Append the next digit (6) from the dividend to 54 and continue with: 546 / 823

On to step 3:
546 divided by 823 is 0 with a remainder of 546.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 546, we get 546.
Take the next digit (4) from the dividend and append it to 546, then repeat: 5464 / 823

Let's proceed to step 4:
The number 823 fits into 5464 6 times, leaving a remainder of 526.
Use 6 as the next digit of our solution. 
Result so far: 6.0
The remainder is 526 after subtracting 4938 from 5464.
Bring next digit (0) of the dividend behind the 526 and repeat the process: 5260 / 823

Let's proceed to step 5:
The number 823 fits into 5260 6 times, leaving a remainder of 322.
Use 6 as the next digit of our solution. 
Result so far: 66.0
If we take 4938 away from 5260, we end up with 322.
Take the next digit (3) from the dividend and append it to 322, then repeat: 3223 / 823

Step 6:
The number 823 fits into 3223 3 times, leaving a remainder of 754.
The next digit of our result is 3. 
Result so far: 663.0
The remainder is 754 after subtracting 2469 from 3223.
Fetch the next digit (1) from the dividend, attach it to 754 and continue: 7541 / 823

Going ahead to step 7:
823 can be fit into 7541 9 times, resulting in a remainder of 134.
Use 9 as the next digit of our solution. 
Result so far: 6639.0
If we subtract 7407 from 7541, we get 134.
Grab the next digit (6) from the dividend, add it to 134, then carry on: 1346 / 823

Going ahead to step 8:
If we divide 1346 by 823, we get 1 and a remainder of 523.
Record the quotient 1 as the next digit in the result. 
Result so far: 66391.0
If we take 823 away from 1346, we end up with 523.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5230, and continue the process.

Step 9:
If we divide 5230 by 823, we get 6 and a remainder of 292.
Record the quotient 6 as the next digit in the result. 
Result so far: 66391.6
Subtracting 4938 from 5230 leaves us with 292.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2920, and continue the process.

On to step 10:
823 goes into 2920 3 times with a remainder of 451.
The number 3 becomes the next digit in our result. 
Result so far: 66391.63
Subtract 2469 from 2920 to get 451.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4510, and continue the process.

Step 11:
823 can be fit into 4510 5 times, resulting in a remainder of 395.
The number 5 becomes the next digit in our result. 
Result so far: 66391.635
Deduct 4115 from 4510 and we're left with 395.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3950, and continue the process.

Advancing to step 12:
The number 823 fits into 3950 4 times, leaving a remainder of 658.
Put 4 as the next digit of the answer. 
Result so far: 66391.6354
The remainder is 658 after subtracting 3292 from 3950.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6580, and continue the process.

Going ahead to step 13:
If we divide 6580 by 823, we get 7 and a remainder of 819.
The next digit of our result is 7. 
Result so far: 66391.63547
If we subtract 5761 from 6580, we get 819.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8190, and continue the process.

Step 14:
The number 823 fits into 8190 9 times, leaving a remainder of 783.
Use 9 as the next digit of our solution. 
Result so far: 66391.635479
Deduct 7407 from 8190 and we're left with 783.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7830, and continue the process.

Moving on to step 15:
The number 823 fits into 7830 9 times, leaving a remainder of 423.
Use 9 as the next digit of our solution. 
Result so far: 66391.6354799
Subtract 7407 from 7830 to get 423.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4230, and continue the process.

The final outcome is 66391.6354799, with a leftover of 4.23e-06.