We're dividing 78843251 by 840 
Our goal is to divide 78843251 by 840.

Step 1:
When dividing 7 by 840, we get 0 with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Bring next digit (8) of the dividend behind the 7 and repeat the process: 78 / 840

Moving on to step 2:
78 divided by 840 is 0 with a remainder of 78.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 78 leaves us with 78.
Include the next digit (8) from the dividend after 78, then repeat: 788 / 840

On to step 3:
If we divide 788 by 840, we get 0 and a remainder of 788.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 788, we get 788.
Bring next digit (4) of the dividend behind the 788 and repeat the process: 7884 / 840

Advancing to step 4:
The number 840 fits into 7884 9 times, leaving a remainder of 324.
Write down 9 as next digit of the result. 
Result so far: 9.0
Deduct 7560 from 7884 and we're left with 324.
Grab the next digit (3) from the dividend, add it to 324, then carry on: 3243 / 840

On to step 5:
840 can be fit into 3243 3 times, resulting in a remainder of 723.
The number 3 becomes the next digit in our result. 
Result so far: 93.0
If we take 2520 away from 3243, we end up with 723.
Take the next digit (2) from the dividend and append it to 723, then repeat: 7232 / 840

Step 6:
840 goes into 7232 8 times with a remainder of 512.
Put 8 as the next digit of the answer. 
Result so far: 938.0
The remainder is 512 after subtracting 6720 from 7232.
Append the next digit (5) from the dividend to 512 and continue with: 5125 / 840

Step 7:
When dividing 5125 by 840, we get 6 with a remainder of 85.
Record the quotient 6 as the next digit in the result. 
Result so far: 9386.0
Subtracting 5040 from 5125 leaves us with 85.
Append the next digit (1) from the dividend to 85 and continue with: 851 / 840

Step 8:
If we divide 851 by 840, we get 1 and a remainder of 11.
The number 1 becomes the next digit in our result. 
Result so far: 93861.0
Subtract 840 from 851 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Moving on to step 9:
840 goes into 110 0 times with a remainder of 110.
The next digit of our result is 0. 
Result so far: 93861.0
Subtracting 0 from 110 leaves us with 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Going ahead to step 10:
If we divide 1100 by 840, we get 1 and a remainder of 260.
The number 1 becomes the next digit in our result. 
Result so far: 93861.01
Subtracting 840 from 1100 leaves us with 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Going ahead to step 11:
The number 840 fits into 2600 3 times, leaving a remainder of 80.
Put 3 as the next digit of the answer. 
Result so far: 93861.013
Subtracting 2520 from 2600 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.

Advancing to step 12:
840 goes into 800 0 times with a remainder of 800.
Write down 0 as next digit of the result. 
Result so far: 93861.013
The remainder is 800 after subtracting 0 from 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8000, and continue the process.

Going ahead to step 13:
8000 divided by 840 is 9 with a remainder of 440.
The number 9 becomes the next digit in our result. 
Result so far: 93861.01309
Subtracting 7560 from 8000 leaves us 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.

Let's proceed to step 14:
The number 840 fits into 4400 5 times, leaving a remainder of 200.
The number 5 becomes the next digit in our result. 
Result so far: 93861.013095
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 15:
The number 840 fits into 2000 2 times, leaving a remainder of 320.
Record the quotient 2 as the next digit in the result. 
Result so far: 93861.0130952
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.

Moving on to step 16:
840 goes into 3200 3 times with a remainder of 680.
The number 3 becomes the next digit in our result. 
Result so far: 93861.01309523
Deduct 2520 from 3200 and we're left with 680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6800, and continue the process.

Our division results in 93861.01309523 with a remaining 6.8e-07.