We're dividing 173987 by 51 
Let's see how many times 51 fits into 173987.

Let's proceed to step 1:
51 can be fit into 1 0 times, resulting in a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Bring next digit (7) of the dividend behind the 1 and repeat the process: 17 / 51

Advancing to step 2:
The number 51 fits into 17 0 times, leaving a remainder of 17.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 17, we get 17.
Take the next digit (3) from the dividend and append it to 17, then repeat: 173 / 51

Step 3:
The number 51 fits into 173 3 times, leaving a remainder of 20.
Write down 3 as next digit of the result. 
Result so far: 3.0
Deduct 153 from 173 and we're left with 20.
Append the next digit (9) from the dividend to 20 and continue with: 209 / 51

Going ahead to step 4:
209 divided by 51 is 4 with a remainder of 5.
Record the quotient 4 as the next digit in the result. 
Result so far: 34.0
If we take 204 away from 209, we end up with 5.
Fetch the next digit (8) from the dividend, attach it to 5 and continue: 58 / 51

Let's proceed to step 5:
The number 51 fits into 58 1 times, leaving a remainder of 7.
Write down 1 as next digit of the result. 
Result so far: 341.0
The remainder is 7 after subtracting 51 from 58.
Include the next digit (7) from the dividend after 7, then repeat: 77 / 51

Going ahead to step 6:
When dividing 77 by 51, we get 1 with a remainder of 26.
The number 1 becomes the next digit in our result. 
Result so far: 3411.0
Deduct 51 from 77 and we're left with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Moving on to step 7:
260 divided by 51 is 5 with a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 3411.5
If we take 255 away from 260, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 8:
If we divide 50 by 51, we get 0 and a remainder of 50.
The next digit of our result is 0. 
Result so far: 3411.5
The remainder is 50 after subtracting 0 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 9:
500 divided by 51 is 9 with a remainder of 41.
The number 9 becomes the next digit in our result. 
Result so far: 3411.509
Deduct 459 from 500 and we're left with 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Going ahead to step 10:
51 goes into 410 8 times with a remainder of 2.
Write down 8 as next digit of the result. 
Result so far: 3411.5098
Subtracting 408 from 410 leaves us 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.

Going ahead to step 11:
51 goes into 20 0 times with a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 3411.5098
Subtracting 0 from 20 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 12:
51 can be fit into 200 3 times, resulting in a remainder of 47.
Use 3 as the next digit of our solution. 
Result so far: 3411.509803
If we subtract 153 from 200, we get 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

On to step 13:
51 goes into 470 9 times with a remainder of 11.
The number 9 becomes the next digit in our result. 
Result so far: 3411.5098039
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 14:
If we divide 110 by 51, we get 2 and a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 3411.50980392
If we subtract 102 from 110, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

After the division, we end up with 3411.50980392 and a remainder of 8e-09.