We divide 399432 by 89
Let's see how many times 89 fits into 399432.

Step 1:
89 can be fit into 3 0 times, resulting in a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Grab the next digit (9) from the dividend, add it to 3, then carry on: 39 / 89

On to step 2:
39 divided by 89 is 0 with a remainder of 39.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 39, we get 39.
Fetch the next digit (9) from the dividend, attach it to 39 and continue: 399 / 89

On to step 3:
89 can be fit into 399 4 times, resulting in a remainder of 43.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
The remainder is 43 after subtracting 356 from 399.
Bring next digit (4) of the dividend behind the 43 and repeat the process: 434 / 89

Step 4:
89 can be fit into 434 4 times, resulting in a remainder of 78.
Put 4 as the next digit of the answer. 
Result so far: 44.0
Deduct 356 from 434 and we're left with 78.
Fetch the next digit (3) from the dividend, attach it to 78 and continue: 783 / 89

Advancing to step 5:
If we divide 783 by 89, we get 8 and a remainder of 71.
Put 8 as the next digit of the answer. 
Result so far: 448.0
Subtracting 712 from 783 leaves us with 71.
Include the next digit (2) from the dividend after 71, then repeat: 712 / 89

Moving on to step 6:
89 can be fit into 712 8 times, resulting in a remainder of 0.
Use 8 as the next digit of our solution. 
Result so far: 4488.0
Deduct 712 from 712 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.

Moving on to step 7:
0 divided by 89 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 4488.0
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.

Moving on to step 8:
The number 89 fits into 0 0 times, leaving a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 4488.0
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 final outcome is 4488.0, with a leftover of 0.0.