51987 ÷ 25 
We want to figure out the number of times 51987 can be divided by 25.

Moving on to step 1:
The number 25 fits into 5 0 times, leaving 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 (1) from the dividend, attach it to 5 and continue: 51 / 25

Let's proceed to step 2:
The number 25 fits into 51 2 times, leaving a remainder of 1.
The next digit of our result is 2. 
Result so far: 2.0
If we take 50 away from 51, we end up with 1.
Grab the next digit (9) from the dividend, add it to 1, then carry on: 19 / 25

Going ahead to step 3:
25 goes into 19 0 times with a remainder of 19.
Put 0 as the next digit of the answer. 
Result so far: 20.0
Subtracting 0 from 19 leaves us with 19.
Append the next digit (8) from the dividend to 19 and continue with: 198 / 25

Going ahead to step 4:
The number 25 fits into 198 7 times, leaving a remainder of 23.
Use 7 as the next digit of our solution. 
Result so far: 207.0
If we subtract 175 from 198, we get 23.
Bring next digit (7) of the dividend behind the 23 and repeat the process: 237 / 25

Going ahead to step 5:
25 can be fit into 237 9 times, resulting in a remainder of 12.
Record the quotient 9 as the next digit in the result. 
Result so far: 2079.0
The remainder is 12 after subtracting 225 from 237.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 6:
25 can be fit into 120 4 times, resulting in a remainder of 20.
Put 4 as the next digit of the answer. 
Result so far: 2079.4
If we subtract 100 from 120, 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.

Step 7:
25 goes into 200 8 times with a remainder of 0.
Put 8 as the next digit of the answer. 
Result so far: 2079.48
If we take 200 away from 200, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 8:
25 can be fit into 0 0 times, resulting in a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 2079.48
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 9:
When dividing 0 by 25, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 2079.48
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 2079.48, with a leftover of 0.0.