803654 ÷ 15 
Our goal is to divide 803654 by 15.

Advancing to step 1:
When dividing 8 by 15, we get 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Grab the next digit (0) from the dividend, add it to 8, then carry on: 80 / 15

On to step 2:
15 goes into 80 5 times with a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
If we subtract 75 from 80, we get 5.
Fetch the next digit (3) from the dividend, attach it to 5 and continue: 53 / 15

Going ahead to step 3:
53 divided by 15 is 3 with a remainder of 8.
Put 3 as the next digit of the answer. 
Result so far: 53.0
Subtract 45 from 53 to get 8.
Fetch the next digit (6) from the dividend, attach it to 8 and continue: 86 / 15

On to step 4:
86 divided by 15 is 5 with a remainder of 11.
Use 5 as the next digit of our solution. 
Result so far: 535.0
The remainder is 11 after subtracting 75 from 86.
Fetch the next digit (5) from the dividend, attach it to 11 and continue: 115 / 15

Going ahead to step 5:
If we divide 115 by 15, we get 7 and a remainder of 10.
The number 7 becomes the next digit in our result. 
Result so far: 5357.0
Deduct 105 from 115 and we're left with 10.
Take the next digit (4) from the dividend and append it to 10, then repeat: 104 / 15

On to step 6:
When dividing 104 by 15, we get 6 with a remainder of 14.
The number 6 becomes the next digit in our result. 
Result so far: 53576.0
Deduct 90 from 104 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 7:
The number 15 fits into 140 9 times, leaving a remainder of 5.
Write down 9 as next digit of the result. 
Result so far: 53576.9
Deduct 135 from 140 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.

Going ahead to step 8:
If we divide 50 by 15, we get 3 and a remainder of 5.
Use 3 as the next digit of our solution. 
Result so far: 53576.93
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:
50 divided by 15 is 3 with a remainder of 5.
The next digit of our result is 3. 
Result so far: 53576.933
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 result is 53576.933 with a remainder of 0.0005.