225590 divided by 15 
We want to divide 225590 by 15.

Going ahead to step 1:
If we divide 2 by 15, we get 0 and a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Append the next digit (2) from the dividend to 2 and continue with: 22 / 15

Going ahead to step 2:
When dividing 22 by 15, we get 1 with a remainder of 7.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 15 from 22 leaves us with 7.
Append the next digit (5) from the dividend to 7 and continue with: 75 / 15

Let's proceed to step 3:
15 goes into 75 5 times with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 15.0
If we take 75 away from 75, we end up with 0.
Bring next digit (5) of the dividend behind the 0 and repeat the process: 5 / 15

On to step 4:
When dividing 5 by 15, we get 0 with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 150.0
Deduct 0 from 5 and we're left with 5.
Take the next digit (9) from the dividend and append it to 5, then repeat: 59 / 15

On to step 5:
The number 15 fits into 59 3 times, leaving a remainder of 14.
Write down 3 as next digit of the result. 
Result so far: 1503.0
Subtracting 45 from 59 leaves us with 14.
Grab the next digit (0) from the dividend, add it to 14, then carry on: 140 / 15

On to step 6:
When dividing 140 by 15, we get 9 with a remainder of 5.
The next digit of our result is 9. 
Result so far: 15039.0
Deduct 135 from 140 and we're left 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.

Step 7:
15 can be fit into 50 3 times, resulting in a remainder of 5.
Use 3 as the next digit of our solution. 
Result so far: 15039.3
Subtract 45 from 50 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 8:
15 can be fit into 50 3 times, resulting in a remainder of 5.
The number 3 becomes the next digit in our result. 
Result so far: 15039.33
Subtracting 45 from 50 leaves us 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.

The final outcome is 15039.33, with a leftover of 0.005.