We look at the division of 15887025 by 221 
We're looking to find how many times 221 goes into 15887025.

Step 1:
1 divided by 221 is 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Include the next digit (5) from the dividend after 1, then repeat: 15 / 221

Let's proceed to step 2:
221 goes into 15 0 times with a remainder of 15.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 15 to get 15.
Fetch the next digit (8) from the dividend, attach it to 15 and continue: 158 / 221

Step 3:
The number 221 fits into 158 0 times, leaving a remainder of 158.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 158 and we're left with 158.
Fetch the next digit (8) from the dividend, attach it to 158 and continue: 1588 / 221

Step 4:
When dividing 1588 by 221, we get 7 with a remainder of 41.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
Subtracting 1547 from 1588 leaves us with 41.
Fetch the next digit (7) from the dividend, attach it to 41 and continue: 417 / 221

Moving on to step 5:
When dividing 417 by 221, we get 1 with a remainder of 196.
The number 1 becomes the next digit in our result. 
Result so far: 71.0
The remainder is 196 after subtracting 221 from 417.
Grab the next digit (0) from the dividend, add it to 196, then carry on: 1960 / 221

Advancing to step 6:
The number 221 fits into 1960 8 times, leaving a remainder of 192.
Use 8 as the next digit of our solution. 
Result so far: 718.0
If we subtract 1768 from 1960, we get 192.
Grab the next digit (2) from the dividend, add it to 192, then carry on: 1922 / 221

Advancing to step 7:
When dividing 1922 by 221, we get 8 with a remainder of 154.
Put 8 as the next digit of the answer. 
Result so far: 7188.0
If we take 1768 away from 1922, we end up with 154.
Take the next digit (5) from the dividend and append it to 154, then repeat: 1545 / 221

On to step 8:
221 goes into 1545 6 times with a remainder of 219.
Use 6 as the next digit of our solution. 
Result so far: 71886.0
If we take 1326 away from 1545, we end up with 219.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2190, and continue the process.

Let's proceed to step 9:
If we divide 2190 by 221, we get 9 and a remainder of 201.
The next digit of our result is 9. 
Result so far: 71886.9
Subtracting 1989 from 2190 leaves us with 201.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2010, and continue the process.

Moving on to step 10:
221 can be fit into 2010 9 times, resulting in a remainder of 21.
Write down 9 as next digit of the result. 
Result so far: 71886.99
Deduct 1989 from 2010 and we're left with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

The final outcome is 71886.99, with a leftover of 0.021.