19039 ÷ 90 
We're looking to find how many times 90 goes into 19039.

On to step 1:
90 goes into 1 0 times with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Take the next digit (9) from the dividend and append it to 1, then repeat: 19 / 90

Let's proceed to step 2:
If we divide 19 by 90, we get 0 and a remainder of 19.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 19, we end up with 19.
Fetch the next digit (0) from the dividend, attach it to 19 and continue: 190 / 90

Advancing to step 3:
When dividing 190 by 90, we get 2 with a remainder of 10.
The next digit of our result is 2. 
Result so far: 2.0
If we take 180 away from 190, we end up with 10.
Fetch the next digit (3) from the dividend, attach it to 10 and continue: 103 / 90

On to step 4:
The number 90 fits into 103 1 times, leaving a remainder of 13.
Write down 1 as next digit of the result. 
Result so far: 21.0
Subtract 90 from 103 to get 13.
Grab the next digit (9) from the dividend, add it to 13, then carry on: 139 / 90

Step 5:
90 can be fit into 139 1 times, resulting in a remainder of 49.
Put 1 as the next digit of the answer. 
Result so far: 211.0
Deduct 90 from 139 and we're left with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Let's proceed to step 6:
490 divided by 90 is 5 with a remainder of 40.
Write down 5 as next digit of the result. 
Result so far: 211.5
The remainder is 40 after subtracting 450 from 490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 7:
90 goes into 400 4 times with a remainder of 40.
Put 4 as the next digit of the answer. 
Result so far: 211.54
The remainder is 40 after subtracting 360 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 8:
90 goes into 400 4 times with a remainder of 40.
The number 4 becomes the next digit in our result. 
Result so far: 211.544
Subtract 360 from 400 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

The final outcome is 211.544, with a leftover of 0.004.