54681945 divided by 840 
We want to divide 54681945 by 840.

Advancing to step 1:
840 goes into 5 0 times with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Include the next digit (4) from the dividend after 5, then repeat: 54 / 840

Step 2:
If we divide 54 by 840, we get 0 and a remainder of 54.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 54, we end up with 54.
Append the next digit (6) from the dividend to 54 and continue with: 546 / 840

Step 3:
546 divided by 840 is 0 with a remainder of 546.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 546 and we're left with 546.
Fetch the next digit (8) from the dividend, attach it to 546 and continue: 5468 / 840

Going ahead to step 4:
840 goes into 5468 6 times with a remainder of 428.
The next digit of our result is 6. 
Result so far: 6.0
The remainder is 428 after subtracting 5040 from 5468.
Take the next digit (1) from the dividend and append it to 428, then repeat: 4281 / 840

Going ahead to step 5:
840 goes into 4281 5 times with a remainder of 81.
Put 5 as the next digit of the answer. 
Result so far: 65.0
If we take 4200 away from 4281, we end up with 81.
Take the next digit (9) from the dividend and append it to 81, then repeat: 819 / 840

Advancing to step 6:
The number 840 fits into 819 0 times, leaving a remainder of 819.
Use 0 as the next digit of our solution. 
Result so far: 650.0
If we subtract 0 from 819, we get 819.
Append the next digit (4) from the dividend to 819 and continue with: 8194 / 840

Step 7:
8194 divided by 840 is 9 with a remainder of 634.
Put 9 as the next digit of the answer. 
Result so far: 6509.0
The remainder is 634 after subtracting 7560 from 8194.
Include the next digit (5) from the dividend after 634, then repeat: 6345 / 840

Let's proceed to step 8:
6345 divided by 840 is 7 with a remainder of 465.
The next digit of our result is 7. 
Result so far: 65097.0
Deduct 5880 from 6345 and we're left with 465.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4650, and continue the process.

Moving on to step 9:
If we divide 4650 by 840, we get 5 and a remainder of 450.
The number 5 becomes the next digit in our result. 
Result so far: 65097.5
If we subtract 4200 from 4650, we get 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4500, and continue the process.

Let's proceed to step 10:
840 goes into 4500 5 times with a remainder of 300.
The next digit of our result is 5. 
Result so far: 65097.55
The remainder is 300 after subtracting 4200 from 4500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

The final outcome is 65097.55, with a leftover of 0.3.