We divide 172980 by 87
Let's see how many times 87 fits into 172980.

Advancing to step 1:
If we divide 1 by 87, we get 0 and 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 / 87

Let's proceed to step 2:
17 divided by 87 is 0 with a remainder of 17.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 17 to get 17.
Include the next digit (2) from the dividend after 17, then repeat: 172 / 87

Advancing to step 3:
The number 87 fits into 172 1 times, leaving a remainder of 85.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 87 from 172 leaves us with 85.
Take the next digit (9) from the dividend and append it to 85, then repeat: 859 / 87

Let's proceed to step 4:
If we divide 859 by 87, we get 9 and a remainder of 76.
Use 9 as the next digit of our solution. 
Result so far: 19.0
If we subtract 783 from 859, we get 76.
Bring next digit (8) of the dividend behind the 76 and repeat the process: 768 / 87

Going ahead to step 5:
The number 87 fits into 768 8 times, leaving a remainder of 72.
The next digit of our result is 8. 
Result so far: 198.0
Subtract 696 from 768 to get 72.
Fetch the next digit (0) from the dividend, attach it to 72 and continue: 720 / 87

Advancing to step 6:
720 divided by 87 is 8 with a remainder of 24.
Put 8 as the next digit of the answer. 
Result so far: 1988.0
Deduct 696 from 720 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 7:
87 goes into 240 2 times with a remainder of 66.
Write down 2 as next digit of the result. 
Result so far: 1988.2
If we subtract 174 from 240, we get 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Let's proceed to step 8:
When dividing 660 by 87, we get 7 with a remainder of 51.
Record the quotient 7 as the next digit in the result. 
Result so far: 1988.27
If we subtract 609 from 660, we get 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Advancing to step 9:
87 can be fit into 510 5 times, resulting in a remainder of 75.
The number 5 becomes the next digit in our result. 
Result so far: 1988.275
The remainder is 75 after subtracting 435 from 510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

On to step 10:
The number 87 fits into 750 8 times, leaving a remainder of 54.
Put 8 as the next digit of the answer. 
Result so far: 1988.2758
Deduct 696 from 750 and we're left with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Going ahead to step 11:
87 goes into 540 6 times with a remainder of 18.
Record the quotient 6 as the next digit in the result. 
Result so far: 1988.27586
The remainder is 18 after subtracting 522 from 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 12:
87 goes into 180 2 times with a remainder of 6.
The next digit of our result is 2. 
Result so far: 1988.275862
Deduct 174 from 180 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 13:
87 goes into 60 0 times with a remainder of 60.
Write down 0 as next digit of the result. 
Result so far: 1988.275862
Subtracting 0 from 60 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Moving on to step 14:
When dividing 600 by 87, we get 6 with a remainder of 78.
Write down 6 as next digit of the result. 
Result so far: 1988.27586206
If we take 522 away from 600, we end up with 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

The final outcome is 1988.27586206, with a leftover of 7.8e-08.