Let's divide 121904 by 4
We want to divide 121904 by 4.

Step 1:
The number 4 fits into 1 0 times, leaving a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Fetch the next digit (2) from the dividend, attach it to 1 and continue: 12 / 4

Advancing to step 2:
4 goes into 12 3 times with a remainder of 0.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
The remainder is 0 after subtracting 12 from 12.
Bring next digit (1) of the dividend behind the 0 and repeat the process: 1 / 4

Moving on to step 3:
When dividing 1 by 4, we get 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 30.0
If we take 0 away from 1, we end up with 1.
Bring next digit (9) of the dividend behind the 1 and repeat the process: 19 / 4

Moving on to step 4:
The number 4 fits into 19 4 times, leaving a remainder of 3.
Write down 4 as next digit of the result. 
Result so far: 304.0
If we take 16 away from 19, we end up with 3.
Take the next digit (0) from the dividend and append it to 3, then repeat: 30 / 4

Step 5:
If we divide 30 by 4, we get 7 and a remainder of 2.
The number 7 becomes the next digit in our result. 
Result so far: 3047.0
Subtract 28 from 30 to get 2.
Grab the next digit (4) from the dividend, add it to 2, then carry on: 24 / 4

Moving on to step 6:
If we divide 24 by 4, we get 6 and a remainder of 0.
The number 6 becomes the next digit in our result. 
Result so far: 30476.0
The remainder is 0 after subtracting 24 from 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 7:
If we divide 0 by 4, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 30476.0
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.

On to step 8:
4 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 30476.0
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.

The quotient of the division is 30476.0, and the remainder is 0.0.