Let's divide 54174905 by 840
We want to figure out the number of times 54174905 can be divided by 840.

On to step 1:
840 goes into 5 0 times with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Bring next digit (4) of the dividend behind the 5 and repeat the process: 54 / 840

On to step 2:
When dividing 54 by 840, we get 0 with a remainder of 54.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 54 and we're left with 54.
Fetch the next digit (1) from the dividend, attach it to 54 and continue: 541 / 840

Advancing to step 3:
541 divided by 840 is 0 with a remainder of 541.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 541, we end up with 541.
Append the next digit (7) from the dividend to 541 and continue with: 5417 / 840

Moving on to step 4:
5417 divided by 840 is 6 with a remainder of 377.
The next digit of our result is 6. 
Result so far: 6.0
If we subtract 5040 from 5417, we get 377.
Fetch the next digit (4) from the dividend, attach it to 377 and continue: 3774 / 840

Step 5:
When dividing 3774 by 840, we get 4 with a remainder of 414.
The number 4 becomes the next digit in our result. 
Result so far: 64.0
If we subtract 3360 from 3774, we get 414.
Take the next digit (9) from the dividend and append it to 414, then repeat: 4149 / 840

Going ahead to step 6:
4149 divided by 840 is 4 with a remainder of 789.
Use 4 as the next digit of our solution. 
Result so far: 644.0
If we subtract 3360 from 4149, we get 789.
Grab the next digit (0) from the dividend, add it to 789, then carry on: 7890 / 840

Going ahead to step 7:
The number 840 fits into 7890 9 times, leaving a remainder of 330.
The next digit of our result is 9. 
Result so far: 6449.0
Subtract 7560 from 7890 to get 330.
Include the next digit (5) from the dividend after 330, then repeat: 3305 / 840

Advancing to step 8:
840 goes into 3305 3 times with a remainder of 785.
Record the quotient 3 as the next digit in the result. 
Result so far: 64493.0
If we take 2520 away from 3305, we end up with 785.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7850, and continue the process.

Step 9:
7850 divided by 840 is 9 with a remainder of 290.
Use 9 as the next digit of our solution. 
Result so far: 64493.9
Subtract 7560 from 7850 to get 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

Step 10:
2900 divided by 840 is 3 with a remainder of 380.
The next digit of our result is 3. 
Result so far: 64493.93
If we subtract 2520 from 2900, we get 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

Let's proceed to step 11:
When dividing 3800 by 840, we get 4 with a remainder of 440.
Put 4 as the next digit of the answer. 
Result so far: 64493.934
If we take 3360 away from 3800, we end up with 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4400, and continue the process.

Moving on to step 12:
When dividing 4400 by 840, we get 5 with a remainder of 200.
Record the quotient 5 as the next digit in the result. 
Result so far: 64493.9345
Deduct 4200 from 4400 and we're left with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Moving on to step 13:
840 can be fit into 2000 2 times, resulting in a remainder of 320.
Write down 2 as next digit of the result. 
Result so far: 64493.93452
The remainder is 320 after subtracting 1680 from 2000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Let's proceed to step 14:
3200 divided by 840 is 3 with a remainder of 680.
Use 3 as the next digit of our solution. 
Result so far: 64493.934523
If we subtract 2520 from 3200, we get 680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6800, and continue the process.

Advancing to step 15:
When dividing 6800 by 840, we get 8 with a remainder of 80.
The number 8 becomes the next digit in our result. 
Result so far: 64493.9345238
Subtracting 6720 from 6800 leaves us with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Moving on to step 16:
840 goes into 800 0 times with a remainder of 800.
Put 0 as the next digit of the answer. 
Result so far: 64493.9345238
If we take 0 away from 800, we end up with 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8000, and continue the process.

After the division, we end up with 64493.9345238 and a remainder of 8e-07.