We look at the division of 210566 by 1 
Our goal is to divide 210566 by 1.

Step 1:
The number 1 fits into 2 2 times, leaving a remainder of 0.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we subtract 2 from 2, we get 0.
Bring next digit (1) of the dividend behind the 0 and repeat the process: 1 / 1

On to step 2:
1 can be fit into 1 1 times, resulting in a remainder of 0.
Write down 1 as next digit of the result. 
Result so far: 21.0
If we take 1 away from 1, we end up with 0.
Fetch the next digit (0) from the dividend, attach it to 0 and continue: 0 / 1

Advancing to step 3:
0 divided by 1 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 210.0
The remainder is 0 after subtracting 0 from 0.
Append the next digit (5) from the dividend to 0 and continue with: 5 / 1

Advancing to step 4:
The number 1 fits into 5 5 times, leaving a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 2105.0
Deduct 5 from 5 and we're left with 0.
Fetch the next digit (6) from the dividend, attach it to 0 and continue: 6 / 1

Step 5:
6 divided by 1 is 6 with a remainder of 0.
Write down 6 as next digit of the result. 
Result so far: 21056.0
Deduct 6 from 6 and we're left with 0.
Grab the next digit (6) from the dividend, add it to 0, then carry on: 6 / 1

Advancing to step 6:
When dividing 6 by 1, we get 6 with a remainder of 0.
Use 6 as the next digit of our solution. 
Result so far: 210566.0
Subtract 6 from 6 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 7:
If we divide 0 by 1, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 210566.0
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 8:
When dividing 0 by 1, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 210566.0
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 210566.0 with a remaining 0.0.