561815 divided by 3 
We want to figure out the number of times 561815 can be divided by 3.

Going ahead to step 1:
3 can be fit into 5 1 times, resulting in a remainder of 2.
The next digit of our result is 1. 
Result so far: 1.0
If we take 3 away from 5, we end up with 2.
Take the next digit (6) from the dividend and append it to 2, then repeat: 26 / 3

Going ahead to step 2:
26 divided by 3 is 8 with a remainder of 2.
The next digit of our result is 8. 
Result so far: 18.0
If we subtract 24 from 26, we get 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 3

On to step 3:
If we divide 21 by 3, we get 7 and a remainder of 0.
Put 7 as the next digit of the answer. 
Result so far: 187.0
Subtracting 21 from 21 leaves us with 0.
Append the next digit (8) from the dividend to 0 and continue with: 8 / 3

Going ahead to step 4:
3 can be fit into 8 2 times, resulting in a remainder of 2.
Use 2 as the next digit of our solution. 
Result so far: 1872.0
If we subtract 6 from 8, we get 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 3

Going ahead to step 5:
If we divide 21 by 3, we get 7 and a remainder of 0.
Use 7 as the next digit of our solution. 
Result so far: 18727.0
Subtract 21 from 21 to get 0.
Grab the next digit (5) from the dividend, add it to 0, then carry on: 5 / 3

Advancing to step 6:
When dividing 5 by 3, we get 1 with a remainder of 2.
The next digit of our result is 1. 
Result so far: 187271.0
Deduct 3 from 5 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 7:
When dividing 20 by 3, we get 6 with a remainder of 2.
Write down 6 as next digit of the result. 
Result so far: 187271.6
If we take 18 away from 20, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 8:
3 can be fit into 20 6 times, resulting in a remainder of 2.
Record the quotient 6 as the next digit in the result. 
Result so far: 187271.66
If we take 18 away from 20, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

In conclusion, the division gives 187271.66 with a balance of 0.002.