438321 ÷ 86 
Our goal is to divide 438321 by 86.

Moving on to step 1:
86 goes into 4 0 times with a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Bring next digit (3) of the dividend behind the 4 and repeat the process: 43 / 86

Let's proceed to step 2:
If we divide 43 by 86, we get 0 and a remainder of 43.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 43 after subtracting 0 from 43.
Grab the next digit (8) from the dividend, add it to 43, then carry on: 438 / 86

Step 3:
When dividing 438 by 86, we get 5 with a remainder of 8.
Use 5 as the next digit of our solution. 
Result so far: 5.0
The remainder is 8 after subtracting 430 from 438.
Append the next digit (3) from the dividend to 8 and continue with: 83 / 86

On to step 4:
83 divided by 86 is 0 with a remainder of 83.
Write down 0 as next digit of the result. 
Result so far: 50.0
If we subtract 0 from 83, we get 83.
Grab the next digit (2) from the dividend, add it to 83, then carry on: 832 / 86

Step 5:
86 can be fit into 832 9 times, resulting in a remainder of 58.
The next digit of our result is 9. 
Result so far: 509.0
Subtract 774 from 832 to get 58.
Fetch the next digit (1) from the dividend, attach it to 58 and continue: 581 / 86

Advancing to step 6:
If we divide 581 by 86, we get 6 and a remainder of 65.
Write down 6 as next digit of the result. 
Result so far: 5096.0
Subtract 516 from 581 to get 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Advancing to step 7:
86 can be fit into 650 7 times, resulting in a remainder of 48.
Put 7 as the next digit of the answer. 
Result so far: 5096.7
The remainder is 48 after subtracting 602 from 650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Going ahead to step 8:
The number 86 fits into 480 5 times, leaving a remainder of 50.
The next digit of our result is 5. 
Result so far: 5096.75
If we subtract 430 from 480, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 9:
The number 86 fits into 500 5 times, leaving a remainder of 70.
Use 5 as the next digit of our solution. 
Result so far: 5096.755
Deduct 430 from 500 and we're left with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

The final outcome is 5096.755, with a leftover of 0.007.