Let's divide 491990 by 15
We're looking to find how many times 15 goes into 491990.

Going ahead to step 1:
15 can be fit into 4 0 times, resulting in a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Fetch the next digit (9) from the dividend, attach it to 4 and continue: 49 / 15

On to step 2:
If we divide 49 by 15, we get 3 and a remainder of 4.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Deduct 45 from 49 and we're left with 4.
Fetch the next digit (1) from the dividend, attach it to 4 and continue: 41 / 15

Step 3:
If we divide 41 by 15, we get 2 and a remainder of 11.
The next digit of our result is 2. 
Result so far: 32.0
If we take 30 away from 41, we end up with 11.
Bring next digit (9) of the dividend behind the 11 and repeat the process: 119 / 15

Advancing to step 4:
When dividing 119 by 15, we get 7 with a remainder of 14.
Put 7 as the next digit of the answer. 
Result so far: 327.0
Deduct 105 from 119 and we're left with 14.
Append the next digit (9) from the dividend to 14 and continue with: 149 / 15

Advancing to step 5:
If we divide 149 by 15, we get 9 and a remainder of 14.
Put 9 as the next digit of the answer. 
Result so far: 3279.0
If we take 135 away from 149, we end up with 14.
Include the next digit (0) from the dividend after 14, then repeat: 140 / 15

Going ahead to step 6:
When dividing 140 by 15, we get 9 with a remainder of 5.
The number 9 becomes the next digit in our result. 
Result so far: 32799.0
If we subtract 135 from 140, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 7:
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: 32799.3
Subtract 45 from 50 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing 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: 32799.33
If we subtract 45 from 50, we get 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 32799.33, with a leftover of 0.005.