We look at the division of 998561 by 15 
Our goal is to divide 998561 by 15.

On to step 1:
9 divided by 15 is 0 with a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Include the next digit (9) from the dividend after 9, then repeat: 99 / 15

Advancing to step 2:
When dividing 99 by 15, we get 6 with a remainder of 9.
Write down 6 as next digit of the result. 
Result so far: 6.0
Subtracting 90 from 99 leaves us with 9.
Fetch the next digit (8) from the dividend, attach it to 9 and continue: 98 / 15

Advancing to step 3:
15 goes into 98 6 times with a remainder of 8.
Record the quotient 6 as the next digit in the result. 
Result so far: 66.0
If we subtract 90 from 98, we get 8.
Append the next digit (5) from the dividend to 8 and continue with: 85 / 15

Advancing to step 4:
15 can be fit into 85 5 times, resulting in a remainder of 10.
The number 5 becomes the next digit in our result. 
Result so far: 665.0
Subtracting 75 from 85 leaves us with 10.
Grab the next digit (6) from the dividend, add it to 10, then carry on: 106 / 15

Advancing to step 5:
15 can be fit into 106 7 times, resulting in a remainder of 1.
The next digit of our result is 7. 
Result so far: 6657.0
If we take 105 away from 106, we end up with 1.
Include the next digit (1) from the dividend after 1, then repeat: 11 / 15

Going ahead to step 6:
15 goes into 11 0 times with a remainder of 11.
Record the quotient 0 as the next digit in the result. 
Result so far: 66570.0
Subtracting 0 from 11 leaves us with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

On to step 7:
When dividing 110 by 15, we get 7 with a remainder of 5.
Record the quotient 7 as the next digit in the result. 
Result so far: 66570.7
Deduct 105 from 110 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.

Step 8:
15 goes into 50 3 times with a remainder of 5.
Write down 3 as next digit of the result. 
Result so far: 66570.73
If we take 45 away from 50, we end up 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.

On to step 9:
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: 66570.733
Deduct 45 from 50 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.

The final outcome is 66570.733, with a leftover of 0.0005.