Let's divide 19889359 by 15
Our goal is to divide 19889359 by 15.

Moving on to step 1:
When dividing 1 by 15, we get 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Take the next digit (9) from the dividend and append it to 1, then repeat: 19 / 15

On to step 2:
15 can be fit into 19 1 times, resulting in a remainder of 4.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 15 from 19, we get 4.
Grab the next digit (8) from the dividend, add it to 4, then carry on: 48 / 15

On to step 3:
15 can be fit into 48 3 times, resulting in a remainder of 3.
The number 3 becomes the next digit in our result. 
Result so far: 13.0
Deduct 45 from 48 and we're left with 3.
Include the next digit (8) from the dividend after 3, then repeat: 38 / 15

On to step 4:
If we divide 38 by 15, we get 2 and a remainder of 8.
Use 2 as the next digit of our solution. 
Result so far: 132.0
The remainder is 8 after subtracting 30 from 38.
Bring next digit (9) of the dividend behind the 8 and repeat the process: 89 / 15

On to step 5:
If we divide 89 by 15, we get 5 and a remainder of 14.
Use 5 as the next digit of our solution. 
Result so far: 1325.0
If we take 75 away from 89, we end up with 14.
Grab the next digit (3) from the dividend, add it to 14, then carry on: 143 / 15

Moving on to step 6:
The number 15 fits into 143 9 times, leaving a remainder of 8.
Record the quotient 9 as the next digit in the result. 
Result so far: 13259.0
Subtract 135 from 143 to get 8.
Bring next digit (5) of the dividend behind the 8 and repeat the process: 85 / 15

On to step 7:
When dividing 85 by 15, we get 5 with a remainder of 10.
The next digit of our result is 5. 
Result so far: 132595.0
Subtract 75 from 85 to get 10.
Append the next digit (9) from the dividend to 10 and continue with: 109 / 15

Let's proceed to step 8:
When dividing 109 by 15, we get 7 with a remainder of 4.
Write down 7 as next digit of the result. 
Result so far: 1325957.0
Subtracting 105 from 109 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 9:
15 can be fit into 40 2 times, resulting in a remainder of 10.
Write down 2 as next digit of the result. 
Result so far: 1325957.2
Subtracting 30 from 40 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.

Step 10:
100 divided by 15 is 6 with a remainder of 10.
Use 6 as the next digit of our solution. 
Result so far: 1325957.26
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.

Let's proceed to step 11:
100 divided by 15 is 6 with a remainder of 10.
The next digit of our result is 6. 
Result so far: 1325957.266
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 1325957.266 with a remaining 0.001.