257554 divided by 15 
Our goal is to divide 257554 by 15.

Moving on to step 1:
If we divide 2 by 15, we get 0 and a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Bring next digit (5) of the dividend behind the 2 and repeat the process: 25 / 15

Going ahead to step 2:
If we divide 25 by 15, we get 1 and a remainder of 10.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 15 away from 25, we end up with 10.
Take the next digit (7) from the dividend and append it to 10, then repeat: 107 / 15

On to step 3:
The number 15 fits into 107 7 times, leaving a remainder of 2.
Use 7 as the next digit of our solution. 
Result so far: 17.0
Deduct 105 from 107 and we're left with 2.
Include the next digit (5) from the dividend after 2, then repeat: 25 / 15

Going ahead to step 4:
15 can be fit into 25 1 times, resulting in a remainder of 10.
The next digit of our result is 1. 
Result so far: 171.0
If we subtract 15 from 25, we get 10.
Bring next digit (5) of the dividend behind the 10 and repeat the process: 105 / 15

Moving on to step 5:
The number 15 fits into 105 7 times, leaving a remainder of 0.
Write down 7 as next digit of the result. 
Result so far: 1717.0
If we take 105 away from 105, we end up with 0.
Append the next digit (4) from the dividend to 0 and continue with: 4 / 15

On to step 6:
When dividing 4 by 15, we get 0 with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 17170.0
Subtracting 0 from 4 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 7:
The number 15 fits into 40 2 times, leaving a remainder of 10.
The next digit of our result is 2. 
Result so far: 17170.2
Subtract 30 from 40 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 8:
15 goes into 100 6 times with a remainder of 10.
Put 6 as the next digit of the answer. 
Result so far: 17170.26
If we subtract 90 from 100, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 9:
If we divide 100 by 15, we get 6 and a remainder of 10.
Use 6 as the next digit of our solution. 
Result so far: 17170.266
Subtract 90 from 100 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The final outcome is 17170.266, with a leftover of 0.001.