Let's divide 684921 by 1
Let's see how many times 1 fits into 684921.

Moving on to step 1:
1 can be fit into 6 6 times, resulting in a remainder of 0.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
If we take 6 away from 6, we end up with 0.
Take the next digit (8) from the dividend and append it to 0, then repeat: 8 / 1

Step 2:
8 divided by 1 is 8 with a remainder of 0.
The next digit of our result is 8. 
Result so far: 68.0
Subtract 8 from 8 to get 0.
Take the next digit (4) from the dividend and append it to 0, then repeat: 4 / 1

Moving on to step 3:
If we divide 4 by 1, we get 4 and a remainder of 0.
Put 4 as the next digit of the answer. 
Result so far: 684.0
If we subtract 4 from 4, we get 0.
Grab the next digit (9) from the dividend, add it to 0, then carry on: 9 / 1

Going ahead to step 4:
The number 1 fits into 9 9 times, leaving a remainder of 0.
Write down 9 as next digit of the result. 
Result so far: 6849.0
Subtracting 9 from 9 leaves us with 0.
Bring next digit (2) of the dividend behind the 0 and repeat the process: 2 / 1

Step 5:
1 goes into 2 2 times with a remainder of 0.
The next digit of our result is 2. 
Result so far: 68492.0
Deduct 2 from 2 and we're left with 0.
Bring next digit (1) of the dividend behind the 0 and repeat the process: 1 / 1

Moving on to step 6:
If we divide 1 by 1, we get 1 and a remainder of 0.
The number 1 becomes the next digit in our result. 
Result so far: 684921.0
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:
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: 684921.0
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.

Advancing to step 8:
1 can be fit into 0 0 times, resulting in a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 684921.0
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.

The quotient of the division is 684921.0, and the remainder is 0.0.