143644 ÷ 18 
Let's see how many times 18 fits into 143644.

Going ahead to step 1:
18 can be fit into 1 0 times, resulting in a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Grab the next digit (4) from the dividend, add it to 1, then carry on: 14 / 18

Let's proceed to step 2:
18 goes into 14 0 times with a remainder of 14.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 14 leaves us with 14.
Append the next digit (3) from the dividend to 14 and continue with: 143 / 18

Advancing to step 3:
18 goes into 143 7 times with a remainder of 17.
Write down 7 as next digit of the result. 
Result so far: 7.0
Subtract 126 from 143 to get 17.
Take the next digit (6) from the dividend and append it to 17, then repeat: 176 / 18

Step 4:
176 divided by 18 is 9 with a remainder of 14.
Write down 9 as next digit of the result. 
Result so far: 79.0
Subtract 162 from 176 to get 14.
Grab the next digit (4) from the dividend, add it to 14, then carry on: 144 / 18

Going ahead to step 5:
144 divided by 18 is 8 with a remainder of 0.
The number 8 becomes the next digit in our result. 
Result so far: 798.0
Subtracting 144 from 144 leaves us with 0.
Fetch the next digit (4) from the dividend, attach it to 0 and continue: 4 / 18

Advancing to step 6:
18 can be fit into 4 0 times, resulting in a remainder of 4.
The next digit of our result is 0. 
Result so far: 7980.0
If we subtract 0 from 4, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 7:
40 divided by 18 is 2 with a remainder of 4.
Put 2 as the next digit of the answer. 
Result so far: 7980.2
If we take 36 away from 40, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 8:
18 can be fit into 40 2 times, resulting in a remainder of 4.
Write down 2 as next digit of the result. 
Result so far: 7980.22
The remainder is 4 after subtracting 36 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

After the division, we end up with 7980.22 and a remainder of 0.004.