351387 divided by 15 
We want to figure out the number of times 351387 can be divided by 15.

Let's proceed to step 1:
15 can be fit into 3 0 times, resulting in a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Grab the next digit (5) from the dividend, add it to 3, then carry on: 35 / 15

Step 2:
15 goes into 35 2 times with a remainder of 5.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we subtract 30 from 35, we get 5.
Bring next digit (1) of the dividend behind the 5 and repeat the process: 51 / 15

Moving on to step 3:
51 divided by 15 is 3 with a remainder of 6.
Use 3 as the next digit of our solution. 
Result so far: 23.0
Subtracting 45 from 51 leaves us with 6.
Bring next digit (3) of the dividend behind the 6 and repeat the process: 63 / 15

Moving on to step 4:
63 divided by 15 is 4 with a remainder of 3.
The number 4 becomes the next digit in our result. 
Result so far: 234.0
Subtract 60 from 63 to get 3.
Grab the next digit (8) from the dividend, add it to 3, then carry on: 38 / 15

Step 5:
If we divide 38 by 15, we get 2 and a remainder of 8.
The next digit of our result is 2. 
Result so far: 2342.0
If we take 30 away from 38, we end up with 8.
Append the next digit (7) from the dividend to 8 and continue with: 87 / 15

On to step 6:
The number 15 fits into 87 5 times, leaving a remainder of 12.
Record the quotient 5 as the next digit in the result. 
Result so far: 23425.0
Subtract 75 from 87 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 7:
If we divide 120 by 15, we get 8 and a remainder of 0.
Put 8 as the next digit of the answer. 
Result so far: 23425.8
If we take 120 away from 120, 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.

Advancing to step 8:
0 divided by 15 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 23425.8
If we take 0 away from 0, 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 9:
15 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 23425.8
Subtract 0 from 0 to 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 result is 23425.8 with a remainder of 0.0.