358172 ÷ 15 
Our goal is to divide 358172 by 15.

On to step 1:
15 goes into 3 0 times with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Bring next digit (5) of the dividend behind the 3 and repeat the process: 35 / 15

Moving on to step 2:
The number 15 fits into 35 2 times, leaving a remainder of 5.
The next digit of our result is 2. 
Result so far: 2.0
If we take 30 away from 35, we end up with 5.
Include the next digit (8) from the dividend after 5, then repeat: 58 / 15

Going ahead to step 3:
15 can be fit into 58 3 times, resulting in a remainder of 13.
Use 3 as the next digit of our solution. 
Result so far: 23.0
If we subtract 45 from 58, we get 13.
Append the next digit (1) from the dividend to 13 and continue with: 131 / 15

Advancing to step 4:
When dividing 131 by 15, we get 8 with a remainder of 11.
Put 8 as the next digit of the answer. 
Result so far: 238.0
Deduct 120 from 131 and we're left with 11.
Append the next digit (7) from the dividend to 11 and continue with: 117 / 15

Going ahead to step 5:
15 goes into 117 7 times with a remainder of 12.
Use 7 as the next digit of our solution. 
Result so far: 2387.0
Deduct 105 from 117 and we're left with 12.
Append the next digit (2) from the dividend to 12 and continue with: 122 / 15

Advancing to step 6:
122 divided by 15 is 8 with a remainder of 2.
Record the quotient 8 as the next digit in the result. 
Result so far: 23878.0
Subtracting 120 from 122 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 7:
20 divided by 15 is 1 with a remainder of 5.
Record the quotient 1 as the next digit in the result. 
Result so far: 23878.1
If we take 15 away from 20, we end up 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 8:
50 divided by 15 is 3 with a remainder of 5.
Record the quotient 3 as the next digit in the result. 
Result so far: 23878.13
If we subtract 45 from 50, we 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.

Moving on to step 9:
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: 23878.133
If we take 45 away from 50, we end up 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 23878.133, with a leftover of 0.0005.