210621 divided by 1 
Let's see how many times 1 fits into 210621.

Going ahead to step 1:
1 can be fit into 2 2 times, resulting in a remainder of 0.
The next digit of our result is 2. 
Result so far: 2.0
Subtracting 2 from 2 leaves us with 0.
Bring next digit (1) of the dividend behind the 0 and repeat the process: 1 / 1

Moving 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
Deduct 1 from 1 and we're left with 0.
Fetch the next digit (0) from the dividend, attach it to 0 and continue: 0 / 1

Advancing to step 3:
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: 210.0
Deduct 0 from 0 and we're left with 0.
Grab the next digit (6) from the dividend, add it to 0, then carry on: 6 / 1

Moving on to step 4:
1 goes into 6 6 times with a remainder of 0.
Use 6 as the next digit of our solution. 
Result so far: 2106.0
Subtract 6 from 6 to get 0.
Include the next digit (2) from the dividend after 0, then repeat: 2 / 1

Moving on to step 5:
If we divide 2 by 1, we get 2 and a remainder of 0.
Write down 2 as next digit of the result. 
Result so far: 21062.0
Subtracting 2 from 2 leaves us with 0.
Fetch the next digit (1) from the dividend, attach it to 0 and continue: 1 / 1

Advancing to step 6:
If we divide 1 by 1, we get 1 and a remainder of 0.
Put 1 as the next digit of the answer. 
Result so far: 210621.0
Subtracting 1 from 1 leaves us 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 7:
0 divided by 1 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 210621.0
If we subtract 0 from 0, we 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.

Step 8:
1 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 210621.0
Deduct 0 from 0 and we're left 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.

The quotient of the division is 210621.0, and the remainder is 0.0.