429021 ÷ 9 
We want to divide 429021 by 9.

Let's proceed to step 1:
9 can be fit into 4 0 times, resulting in a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Grab the next digit (2) from the dividend, add it to 4, then carry on: 42 / 9

Let's proceed to step 2:
9 can be fit into 42 4 times, resulting in a remainder of 6.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Deduct 36 from 42 and we're left with 6.
Take the next digit (9) from the dividend and append it to 6, then repeat: 69 / 9

Advancing to step 3:
If we divide 69 by 9, we get 7 and a remainder of 6.
Put 7 as the next digit of the answer. 
Result so far: 47.0
Subtracting 63 from 69 leaves us with 6.
Append the next digit (0) from the dividend to 6 and continue with: 60 / 9

Advancing to step 4:
9 goes into 60 6 times with a remainder of 6.
Use 6 as the next digit of our solution. 
Result so far: 476.0
If we take 54 away from 60, we end up with 6.
Append the next digit (2) from the dividend to 6 and continue with: 62 / 9

Going ahead to step 5:
62 divided by 9 is 6 with a remainder of 8.
Use 6 as the next digit of our solution. 
Result so far: 4766.0
If we subtract 54 from 62, we get 8.
Include the next digit (1) from the dividend after 8, then repeat: 81 / 9

Step 6:
When dividing 81 by 9, we get 9 with a remainder of 0.
Use 9 as the next digit of our solution. 
Result so far: 47669.0
Deduct 81 from 81 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.

Going ahead to step 7:
9 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 47669.0
If we take 0 away from 0, 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.

Going ahead to step 8:
When dividing 0 by 9, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 47669.0
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 result is 47669.0 with a remainder of 0.0.