We look at the division of 53231215 by 840 
We want to divide 53231215 by 840.

Let's proceed to step 1:
When dividing 5 by 840, we get 0 with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Append the next digit (3) from the dividend to 5 and continue with: 53 / 840

Step 2:
When dividing 53 by 840, we get 0 with a remainder of 53.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 53, we end up with 53.
Append the next digit (2) from the dividend to 53 and continue with: 532 / 840

Going ahead to step 3:
840 goes into 532 0 times with a remainder of 532.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 532, we end up with 532.
Take the next digit (3) from the dividend and append it to 532, then repeat: 5323 / 840

Moving on to step 4:
When dividing 5323 by 840, we get 6 with a remainder of 283.
Use 6 as the next digit of our solution. 
Result so far: 6.0
The remainder is 283 after subtracting 5040 from 5323.
Append the next digit (1) from the dividend to 283 and continue with: 2831 / 840

Going ahead to step 5:
840 goes into 2831 3 times with a remainder of 311.
Write down 3 as next digit of the result. 
Result so far: 63.0
Subtract 2520 from 2831 to get 311.
Fetch the next digit (2) from the dividend, attach it to 311 and continue: 3112 / 840

Moving on to step 6:
If we divide 3112 by 840, we get 3 and a remainder of 592.
Write down 3 as next digit of the result. 
Result so far: 633.0
The remainder is 592 after subtracting 2520 from 3112.
Include the next digit (1) from the dividend after 592, then repeat: 5921 / 840

Advancing to step 7:
When dividing 5921 by 840, we get 7 with a remainder of 41.
Use 7 as the next digit of our solution. 
Result so far: 6337.0
Subtracting 5880 from 5921 leaves us with 41.
Grab the next digit (5) from the dividend, add it to 41, then carry on: 415 / 840

Going ahead to step 8:
If we divide 415 by 840, we get 0 and a remainder of 415.
Write down 0 as next digit of the result. 
Result so far: 63370.0
The remainder is 415 after subtracting 0 from 415.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4150, and continue the process.

Moving on to step 9:
When dividing 4150 by 840, we get 4 with a remainder of 790.
Record the quotient 4 as the next digit in the result. 
Result so far: 63370.4
If we subtract 3360 from 4150, we get 790.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7900, and continue the process.

Going ahead to step 10:
When dividing 7900 by 840, we get 9 with a remainder of 340.
The next digit of our result is 9. 
Result so far: 63370.49
If we take 7560 away from 7900, we end up with 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

On to step 11:
If we divide 3400 by 840, we get 4 and a remainder of 40.
Put 4 as the next digit of the answer. 
Result so far: 63370.494
If we take 3360 away from 3400, we end up with 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:
840 goes into 400 0 times with a remainder of 400.
Put 0 as the next digit of the answer. 
Result so far: 63370.494
Subtracting 0 from 400 leaves us 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.

On to step 13:
The number 840 fits into 4000 4 times, leaving a remainder of 640.
The next digit of our result is 4. 
Result so far: 63370.49404
Subtracting 3360 from 4000 leaves us 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.

Going ahead to step 14:
6400 divided by 840 is 7 with a remainder of 520.
The next digit of our result is 7. 
Result so far: 63370.494047
The remainder is 520 after subtracting 5880 from 6400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5200, and continue the process.

On to step 15:
5200 divided by 840 is 6 with a remainder of 160.
The next digit of our result is 6. 
Result so far: 63370.4940476
Deduct 5040 from 5200 and we're left with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

On to step 16:
840 can be fit into 1600 1 times, resulting in a remainder of 760.
Use 1 as the next digit of our solution. 
Result so far: 63370.49404761
Subtract 840 from 1600 to get 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7600, and continue the process.

Our division results in 63370.49404761 with a remaining 7.6e-07.