Let's divide 266240 by 15
We want to figure out the number of times 266240 can be divided by 15.

On to step 1:
15 goes into 2 0 times with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Grab the next digit (6) from the dividend, add it to 2, then carry on: 26 / 15

Let's proceed to step 2:
The number 15 fits into 26 1 times, leaving a remainder of 11.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 15 from 26 and we're left with 11.
Fetch the next digit (6) from the dividend, attach it to 11 and continue: 116 / 15

Let's proceed to step 3:
When dividing 116 by 15, we get 7 with a remainder of 11.
The next digit of our result is 7. 
Result so far: 17.0
Subtract 105 from 116 to get 11.
Take the next digit (2) from the dividend and append it to 11, then repeat: 112 / 15

Let's proceed to step 4:
If we divide 112 by 15, we get 7 and a remainder of 7.
Write down 7 as next digit of the result. 
Result so far: 177.0
The remainder is 7 after subtracting 105 from 112.
Bring next digit (4) of the dividend behind the 7 and repeat the process: 74 / 15

Moving on to step 5:
74 divided by 15 is 4 with a remainder of 14.
Put 4 as the next digit of the answer. 
Result so far: 1774.0
If we take 60 away from 74, we end up with 14.
Fetch the next digit (0) from the dividend, attach it to 14 and continue: 140 / 15

On to step 6:
When dividing 140 by 15, we get 9 with a remainder of 5.
Write down 9 as next digit of the result. 
Result so far: 17749.0
Deduct 135 from 140 and we're left 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.

Moving on to step 7:
50 divided by 15 is 3 with a remainder of 5.
Put 3 as the next digit of the answer. 
Result so far: 17749.3
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.

Advancing to step 8:
15 can be fit into 50 3 times, resulting in a remainder of 5.
Use 3 as the next digit of our solution. 
Result so far: 17749.33
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.

The final outcome is 17749.33, with a leftover of 0.005.