We're dividing 142187 by 51 
We want to divide 142187 by 51.

Let's proceed to step 1:
51 can be fit into 1 0 times, resulting in a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Append the next digit (4) from the dividend to 1 and continue with: 14 / 51

Step 2:
When dividing 14 by 51, we get 0 with a remainder of 14.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 14 and we're left with 14.
Include the next digit (2) from the dividend after 14, then repeat: 142 / 51

Step 3:
142 divided by 51 is 2 with a remainder of 40.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we subtract 102 from 142, we get 40.
Append the next digit (1) from the dividend to 40 and continue with: 401 / 51

Moving on to step 4:
51 can be fit into 401 7 times, resulting in a remainder of 44.
Put 7 as the next digit of the answer. 
Result so far: 27.0
Deduct 357 from 401 and we're left with 44.
Bring next digit (8) of the dividend behind the 44 and repeat the process: 448 / 51

Going ahead to step 5:
448 divided by 51 is 8 with a remainder of 40.
The next digit of our result is 8. 
Result so far: 278.0
Subtract 408 from 448 to get 40.
Take the next digit (7) from the dividend and append it to 40, then repeat: 407 / 51

On to step 6:
407 divided by 51 is 7 with a remainder of 50.
Record the quotient 7 as the next digit in the result. 
Result so far: 2787.0
Deduct 357 from 407 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 7:
When dividing 500 by 51, we get 9 with a remainder of 41.
Use 9 as the next digit of our solution. 
Result so far: 2787.9
Subtract 459 from 500 to get 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Moving on to step 8:
When dividing 410 by 51, we get 8 with a remainder of 2.
The next digit of our result is 8. 
Result so far: 2787.98
If we take 408 away from 410, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 9:
The number 51 fits into 20 0 times, leaving a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 2787.98
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 10:
200 divided by 51 is 3 with a remainder of 47.
Use 3 as the next digit of our solution. 
Result so far: 2787.9803
If we take 153 away from 200, we end up with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Advancing to step 11:
51 can be fit into 470 9 times, resulting in a remainder of 11.
Write down 9 as next digit of the result. 
Result so far: 2787.98039
The remainder is 11 after subtracting 459 from 470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

On to step 12:
51 goes into 110 2 times with a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 2787.980392
The remainder is 8 after subtracting 102 from 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 13:
The number 51 fits into 80 1 times, leaving a remainder of 29.
The next digit of our result is 1. 
Result so far: 2787.9803921
The remainder is 29 after subtracting 51 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Going ahead to step 14:
51 can be fit into 290 5 times, resulting in a remainder of 35.
The number 5 becomes the next digit in our result. 
Result so far: 2787.98039215
If we subtract 255 from 290, we get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Our division results in 2787.98039215 with a remaining 3.5e-08.