392215 ÷ 1 
We want to divide 392215 by 1.

Going ahead to step 1:
When dividing 3 by 1, we get 3 with a remainder of 0.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
The remainder is 0 after subtracting 3 from 3.
Grab the next digit (9) from the dividend, add it to 0, then carry on: 9 / 1

Advancing to step 2:
1 goes into 9 9 times with a remainder of 0.
Put 9 as the next digit of the answer. 
Result so far: 39.0
The remainder is 0 after subtracting 9 from 9.
Grab the next digit (2) from the dividend, add it to 0, then carry on: 2 / 1

Step 3:
1 goes into 2 2 times with a remainder of 0.
The next digit of our result is 2. 
Result so far: 392.0
If we subtract 2 from 2, we get 0.
Take the next digit (2) from the dividend and append it to 0, then repeat: 2 / 1

Going ahead to step 4:
The number 1 fits into 2 2 times, leaving a remainder of 0.
Write down 2 as next digit of the result. 
Result so far: 3922.0
If we subtract 2 from 2, we get 0.
Append the next digit (1) from the dividend to 0 and continue with: 1 / 1

On to step 5:
When dividing 1 by 1, we get 1 with a remainder of 0.
Write down 1 as next digit of the result. 
Result so far: 39221.0
The remainder is 0 after subtracting 1 from 1.
Grab the next digit (5) from the dividend, add it to 0, then carry on: 5 / 1

On to step 6:
1 goes into 5 5 times with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 392215.0
If we subtract 5 from 5, 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 7:
The number 1 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 392215.0
Subtract 0 from 0 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.

Going ahead to step 8:
0 divided by 1 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 392215.0
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 final outcome is 392215.0, with a leftover of 0.0.