Let's divide 806438 by 18
Let's see how many times 18 fits into 806438.

Advancing to step 1:
If we divide 8 by 18, we get 0 and a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Fetch the next digit (0) from the dividend, attach it to 8 and continue: 80 / 18

On to step 2:
If we divide 80 by 18, we get 4 and a remainder of 8.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Subtracting 72 from 80 leaves us with 8.
Fetch the next digit (6) from the dividend, attach it to 8 and continue: 86 / 18

Going ahead to step 3:
18 goes into 86 4 times with a remainder of 14.
Write down 4 as next digit of the result. 
Result so far: 44.0
The remainder is 14 after subtracting 72 from 86.
Grab the next digit (4) from the dividend, add it to 14, then carry on: 144 / 18

Step 4:
18 can be fit into 144 8 times, resulting in a remainder of 0.
The number 8 becomes the next digit in our result. 
Result so far: 448.0
Deduct 144 from 144 and we're left with 0.
Fetch the next digit (3) from the dividend, attach it to 0 and continue: 3 / 18

Going ahead to step 5:
18 can be fit into 3 0 times, resulting in a remainder of 3.
The next digit of our result is 0. 
Result so far: 4480.0
The remainder is 3 after subtracting 0 from 3.
Include the next digit (8) from the dividend after 3, then repeat: 38 / 18

Going ahead to step 6:
18 goes into 38 2 times with a remainder of 2.
Put 2 as the next digit of the answer. 
Result so far: 44802.0
If we take 36 away from 38, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 7:
18 can be fit into 20 1 times, resulting in a remainder of 2.
The next digit of our result is 1. 
Result so far: 44802.1
Subtracting 18 from 20 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 8:
The number 18 fits into 20 1 times, leaving a remainder of 2.
The number 1 becomes the next digit in our result. 
Result so far: 44802.11
If we take 18 away from 20, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

The final outcome is 44802.11, with a leftover of 0.002.