215961 divided by 1 
We're looking to find how many times 1 goes into 215961.

Step 1:
1 can be fit into 2 2 times, resulting in a remainder of 0.
Write down 2 as next digit of the result. 
Result so far: 2.0
The remainder is 0 after subtracting 2 from 2.
Include the next digit (1) from the dividend after 0, then repeat: 1 / 1

Moving on to step 2:
1 can be fit into 1 1 times, resulting in a remainder of 0.
Record the quotient 1 as the next digit in the result. 
Result so far: 21.0
Subtracting 1 from 1 leaves us with 0.
Append the next digit (5) from the dividend to 0 and continue with: 5 / 1

Moving on to step 3:
The number 1 fits into 5 5 times, leaving a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 215.0
Subtracting 5 from 5 leaves us with 0.
Append the next digit (9) from the dividend to 0 and continue with: 9 / 1

On to step 4:
If we divide 9 by 1, we get 9 and a remainder of 0.
Use 9 as the next digit of our solution. 
Result so far: 2159.0
The remainder is 0 after subtracting 9 from 9.
Grab the next digit (6) from the dividend, add it to 0, then carry on: 6 / 1

Moving on to step 5:
The number 1 fits into 6 6 times, leaving a remainder of 0.
Write down 6 as next digit of the result. 
Result so far: 21596.0
Subtract 6 from 6 to get 0.
Fetch the next digit (1) from the dividend, attach it to 0 and continue: 1 / 1

Step 6:
1 can be fit into 1 1 times, resulting in a remainder of 0.
The number 1 becomes the next digit in our result. 
Result so far: 215961.0
If we take 1 away from 1, 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 7:
When dividing 0 by 1, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 215961.0
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.

Moving on to step 8:
1 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 215961.0
Subtracting 0 from 0 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.

In conclusion, the division gives 215961.0 with a balance of 0.0.