Let's divide 155539 by 15
We want to figure out the number of times 155539 can be divided by 15.

Going ahead to step 1:
15 can be fit into 1 0 times, resulting in a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Include the next digit (5) from the dividend after 1, then repeat: 15 / 15

Moving on to step 2:
15 goes into 15 1 times with a remainder of 0.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 15 from 15, we get 0.
Include the next digit (5) from the dividend after 0, then repeat: 5 / 15

Advancing to step 3:
5 divided by 15 is 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
Subtract 0 from 5 to get 5.
Grab the next digit (5) from the dividend, add it to 5, then carry on: 55 / 15

Going ahead to step 4:
15 goes into 55 3 times with a remainder of 10.
The number 3 becomes the next digit in our result. 
Result so far: 103.0
Deduct 45 from 55 and we're left with 10.
Grab the next digit (3) from the dividend, add it to 10, then carry on: 103 / 15

On to step 5:
103 divided by 15 is 6 with a remainder of 13.
The next digit of our result is 6. 
Result so far: 1036.0
Deduct 90 from 103 and we're left with 13.
Fetch the next digit (9) from the dividend, attach it to 13 and continue: 139 / 15

Advancing to step 6:
The number 15 fits into 139 9 times, leaving a remainder of 4.
The next digit of our result is 9. 
Result so far: 10369.0
Subtract 135 from 139 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 7:
15 can be fit into 40 2 times, resulting in a remainder of 10.
The number 2 becomes the next digit in our result. 
Result so far: 10369.2
The remainder is 10 after subtracting 30 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 8:
When dividing 100 by 15, we get 6 with a remainder of 10.
The next digit of our result is 6. 
Result so far: 10369.26
Subtracting 90 from 100 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 9:
15 can be fit into 100 6 times, resulting in a remainder of 10.
Use 6 as the next digit of our solution. 
Result so far: 10369.266
If we subtract 90 from 100, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Our division results in 10369.266 with a remaining 0.001.