237866 ÷ 15 
We want to divide 237866 by 15.

On to step 1:
If we divide 2 by 15, we get 0 and a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Grab the next digit (3) from the dividend, add it to 2, then carry on: 23 / 15

On to step 2:
The number 15 fits into 23 1 times, leaving a remainder of 8.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 15 from 23, we get 8.
Grab the next digit (7) from the dividend, add it to 8, then carry on: 87 / 15

Moving on to step 3:
The number 15 fits into 87 5 times, leaving a remainder of 12.
The next digit of our result is 5. 
Result so far: 15.0
If we take 75 away from 87, we end up with 12.
Bring next digit (8) of the dividend behind the 12 and repeat the process: 128 / 15

Moving on to step 4:
15 can be fit into 128 8 times, resulting in a remainder of 8.
The next digit of our result is 8. 
Result so far: 158.0
If we take 120 away from 128, we end up with 8.
Grab the next digit (6) from the dividend, add it to 8, then carry on: 86 / 15

Advancing to step 5:
15 goes into 86 5 times with a remainder of 11.
The number 5 becomes the next digit in our result. 
Result so far: 1585.0
If we take 75 away from 86, we end up with 11.
Fetch the next digit (6) from the dividend, attach it to 11 and continue: 116 / 15

Going ahead to step 6:
15 can be fit into 116 7 times, resulting in a remainder of 11.
Record the quotient 7 as the next digit in the result. 
Result so far: 15857.0
Subtract 105 from 116 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Moving on to step 7:
15 goes into 110 7 times with a remainder of 5.
The number 7 becomes the next digit in our result. 
Result so far: 15857.7
Subtracting 105 from 110 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.

Advancing to step 8:
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: 15857.73
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.

Let's proceed to step 9:
15 goes into 50 3 times with a remainder of 5.
The next digit of our result is 3. 
Result so far: 15857.733
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 result is 15857.733 with a remainder of 0.0005.