We're dividing 236870 by 15 
We're looking to find how many times 15 goes into 236870.

Advancing to step 1:
The number 15 fits into 2 0 times, leaving a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Append the next digit (3) from the dividend to 2 and continue with: 23 / 15

Advancing to step 2:
15 can be fit into 23 1 times, resulting in a remainder of 8.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 15 from 23 leaves us with 8.
Take the next digit (6) from the dividend and append it to 8, then repeat: 86 / 15

Going ahead to step 3:
The number 15 fits into 86 5 times, leaving a remainder of 11.
Write down 5 as next digit of the result. 
Result so far: 15.0
Subtract 75 from 86 to get 11.
Grab the next digit (8) from the dividend, add it to 11, then carry on: 118 / 15

On to step 4:
15 goes into 118 7 times with a remainder of 13.
The number 7 becomes the next digit in our result. 
Result so far: 157.0
If we take 105 away from 118, we end up with 13.
Grab the next digit (7) from the dividend, add it to 13, then carry on: 137 / 15

Let's proceed to step 5:
The number 15 fits into 137 9 times, leaving a remainder of 2.
Put 9 as the next digit of the answer. 
Result so far: 1579.0
The remainder is 2 after subtracting 135 from 137.
Bring next digit (0) of the dividend behind the 2 and repeat the process: 20 / 15

Moving on to step 6:
15 can be fit into 20 1 times, resulting in a remainder of 5.
The number 1 becomes the next digit in our result. 
Result so far: 15791.0
Subtracting 15 from 20 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.

On to step 7:
The number 15 fits into 50 3 times, leaving a remainder of 5.
The number 3 becomes the next digit in our result. 
Result so far: 15791.3
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:
50 divided by 15 is 3 with a remainder of 5.
Put 3 as the next digit of the answer. 
Result so far: 15791.33
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 15791.33, with a leftover of 0.005.