We look at the division of 52871687 by 420 
Our goal is to divide 52871687 by 420.

Let's proceed to step 1:
420 goes into 5 0 times with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Fetch the next digit (2) from the dividend, attach it to 5 and continue: 52 / 420

Going ahead to step 2:
420 can be fit into 52 0 times, resulting in a remainder of 52.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 52 leaves us with 52.
Fetch the next digit (8) from the dividend, attach it to 52 and continue: 528 / 420

Advancing to step 3:
528 divided by 420 is 1 with a remainder of 108.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 420 away from 528, we end up with 108.
Fetch the next digit (7) from the dividend, attach it to 108 and continue: 1087 / 420

Moving on to step 4:
If we divide 1087 by 420, we get 2 and a remainder of 247.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
Subtract 840 from 1087 to get 247.
Take the next digit (1) from the dividend and append it to 247, then repeat: 2471 / 420

On to step 5:
When dividing 2471 by 420, we get 5 with a remainder of 371.
Put 5 as the next digit of the answer. 
Result so far: 125.0
Subtract 2100 from 2471 to get 371.
Fetch the next digit (6) from the dividend, attach it to 371 and continue: 3716 / 420

Moving on to step 6:
420 can be fit into 3716 8 times, resulting in a remainder of 356.
Use 8 as the next digit of our solution. 
Result so far: 1258.0
If we subtract 3360 from 3716, we get 356.
Include the next digit (8) from the dividend after 356, then repeat: 3568 / 420

Let's proceed to step 7:
420 goes into 3568 8 times with a remainder of 208.
Use 8 as the next digit of our solution. 
Result so far: 12588.0
The remainder is 208 after subtracting 3360 from 3568.
Take the next digit (7) from the dividend and append it to 208, then repeat: 2087 / 420

Moving on to step 8:
2087 divided by 420 is 4 with a remainder of 407.
The next digit of our result is 4. 
Result so far: 125884.0
If we take 1680 away from 2087, we end up with 407.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4070, and continue the process.

Moving on to step 9:
420 can be fit into 4070 9 times, resulting in a remainder of 290.
Put 9 as the next digit of the answer. 
Result so far: 125884.9
Subtract 3780 from 4070 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.

Going ahead to step 10:
420 goes into 2900 6 times with a remainder of 380.
Write down 6 as next digit of the result. 
Result so far: 125884.96
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.

Going ahead to step 11:
The number 420 fits into 3800 9 times, leaving a remainder of 20.
Put 9 as the next digit of the answer. 
Result so far: 125884.969
If we subtract 3780 from 3800, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 12:
200 divided by 420 is 0 with a remainder of 200.
The number 0 becomes the next digit in our result. 
Result so far: 125884.969
If we take 0 away from 200, we end up 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.

Going ahead to step 13:
The number 420 fits into 2000 4 times, leaving a remainder of 320.
The next digit of our result is 4. 
Result so far: 125884.96904
Subtract 1680 from 2000 to get 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Advancing to step 14:
When dividing 3200 by 420, we get 7 with a remainder of 260.
Record the quotient 7 as the next digit in the result. 
Result so far: 125884.969047
Deduct 2940 from 3200 and we're left 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.

On to step 15:
420 can be fit into 2600 6 times, resulting in a remainder of 80.
Record the quotient 6 as the next digit in the result. 
Result so far: 125884.9690476
If we take 2520 away from 2600, we end up 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.

Going ahead to step 16:
800 divided by 420 is 1 with a remainder of 380.
The number 1 becomes the next digit in our result. 
Result so far: 125884.96904761
The remainder is 380 after subtracting 420 from 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

The final result is 125884.96904761 with a remainder of 3.8e-07.