We look at the division of 543960 by 15 
Let's see how many times 15 fits into 543960.

Let's proceed to step 1:
5 divided by 15 is 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Grab the next digit (4) from the dividend, add it to 5, then carry on: 54 / 15

Advancing to step 2:
15 can be fit into 54 3 times, resulting in a remainder of 9.
Use 3 as the next digit of our solution. 
Result so far: 3.0
The remainder is 9 after subtracting 45 from 54.
Grab the next digit (3) from the dividend, add it to 9, then carry on: 93 / 15

On to step 3:
When dividing 93 by 15, we get 6 with a remainder of 3.
Write down 6 as next digit of the result. 
Result so far: 36.0
If we take 90 away from 93, we end up with 3.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 15

Going ahead to step 4:
When dividing 39 by 15, we get 2 with a remainder of 9.
The next digit of our result is 2. 
Result so far: 362.0
Subtracting 30 from 39 leaves us with 9.
Include the next digit (6) from the dividend after 9, then repeat: 96 / 15

Moving on to step 5:
15 goes into 96 6 times with a remainder of 6.
The next digit of our result is 6. 
Result so far: 3626.0
If we take 90 away from 96, we end up with 6.
Bring next digit (0) of the dividend behind the 6 and repeat the process: 60 / 15

Moving on to step 6:
When dividing 60 by 15, we get 4 with a remainder of 0.
The number 4 becomes the next digit in our result. 
Result so far: 36264.0
The remainder is 0 after subtracting 60 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 7:
15 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 36264.0
The remainder is 0 after subtracting 0 from 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 8:
0 divided by 15 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 36264.0
If we subtract 0 from 0, we 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.

Our division results in 36264.0 with a remaining 0.0.