68957170 ÷ 840 
We want to figure out the number of times 68957170 can be divided by 840.

Step 1:
The number 840 fits into 6 0 times, leaving a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Take the next digit (8) from the dividend and append it to 6, then repeat: 68 / 840

Moving on to step 2:
68 divided by 840 is 0 with a remainder of 68.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 68, we get 68.
Append the next digit (9) from the dividend to 68 and continue with: 689 / 840

Let's proceed to step 3:
The number 840 fits into 689 0 times, leaving a remainder of 689.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 689, we end up with 689.
Grab the next digit (5) from the dividend, add it to 689, then carry on: 6895 / 840

On to step 4:
6895 divided by 840 is 8 with a remainder of 175.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
Subtracting 6720 from 6895 leaves us with 175.
Fetch the next digit (7) from the dividend, attach it to 175 and continue: 1757 / 840

Let's proceed to step 5:
840 goes into 1757 2 times with a remainder of 77.
The number 2 becomes the next digit in our result. 
Result so far: 82.0
If we take 1680 away from 1757, we end up with 77.
Fetch the next digit (1) from the dividend, attach it to 77 and continue: 771 / 840

Advancing to step 6:
771 divided by 840 is 0 with a remainder of 771.
Put 0 as the next digit of the answer. 
Result so far: 820.0
The remainder is 771 after subtracting 0 from 771.
Grab the next digit (7) from the dividend, add it to 771, then carry on: 7717 / 840

Let's proceed to step 7:
840 can be fit into 7717 9 times, resulting in a remainder of 157.
Put 9 as the next digit of the answer. 
Result so far: 8209.0
The remainder is 157 after subtracting 7560 from 7717.
Grab the next digit (0) from the dividend, add it to 157, then carry on: 1570 / 840

Going ahead to step 8:
840 goes into 1570 1 times with a remainder of 730.
Put 1 as the next digit of the answer. 
Result so far: 82091.0
Deduct 840 from 1570 and we're left with 730.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7300, and continue the process.

Moving on to step 9:
If we divide 7300 by 840, we get 8 and a remainder of 580.
The next digit of our result is 8. 
Result so far: 82091.8
Deduct 6720 from 7300 and we're left with 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5800, and continue the process.

Going ahead to step 10:
5800 divided by 840 is 6 with a remainder of 760.
The number 6 becomes the next digit in our result. 
Result so far: 82091.86
If we take 5040 away from 5800, we end up with 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7600, and continue the process.

Step 11:
The number 840 fits into 7600 9 times, leaving a remainder of 40.
The next digit of our result is 9. 
Result so far: 82091.869
Subtract 7560 from 7600 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 12:
400 divided by 840 is 0 with a remainder of 400.
Record the quotient 0 as the next digit in the result. 
Result so far: 82091.869
If we take 0 away from 400, we end up with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Moving on to step 13:
840 can be fit into 4000 4 times, resulting in a remainder of 640.
Record the quotient 4 as the next digit in the result. 
Result so far: 82091.86904
Deduct 3360 from 4000 and we're left with 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

Advancing to step 14:
840 goes into 6400 7 times with a remainder of 520.
Record the quotient 7 as the next digit in the result. 
Result so far: 82091.869047
Subtract 5880 from 6400 to get 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5200, and continue the process.

Moving on to step 15:
The number 840 fits into 5200 6 times, leaving a remainder of 160.
Record the quotient 6 as the next digit in the result. 
Result so far: 82091.8690476
If we subtract 5040 from 5200, we get 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Going ahead to step 16:
When dividing 1600 by 840, we get 1 with a remainder of 760.
The number 1 becomes the next digit in our result. 
Result so far: 82091.86904761
Subtracting 840 from 1600 leaves us with 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7600, and continue the process.

The final outcome is 82091.86904761, with a leftover of 7.6e-07.