6443 divided by 12 
Let's see how many times 12 fits into 6443.

Let's proceed to step 1:
12 can be fit into 6 0 times, resulting in a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 12

Let's proceed to step 2:
12 goes into 64 5 times with a remainder of 4.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
If we subtract 60 from 64, we get 4.
Include the next digit (4) from the dividend after 4, then repeat: 44 / 12

Let's proceed to step 3:
12 can be fit into 44 3 times, resulting in a remainder of 8.
Write down 3 as next digit of the result. 
Result so far: 53.0
Subtract 36 from 44 to get 8.
Append the next digit (3) from the dividend to 8 and continue with: 83 / 12

Step 4:
The number 12 fits into 83 6 times, leaving a remainder of 11.
Record the quotient 6 as the next digit in the result. 
Result so far: 536.0
Subtracting 72 from 83 leaves us with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 5:
When dividing 110 by 12, we get 9 with a remainder of 2.
Write down 9 as next digit of the result. 
Result so far: 536.9
If we subtract 108 from 110, we get 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 6:
20 divided by 12 is 1 with a remainder of 8.
Use 1 as the next digit of our solution. 
Result so far: 536.91
The remainder is 8 after subtracting 12 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 7:
12 can be fit into 80 6 times, resulting in a remainder of 8.
The next digit of our result is 6. 
Result so far: 536.916
Subtracting 72 from 80 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 8:
When dividing 80 by 12, we get 6 with a remainder of 8.
Write down 6 as next digit of the result. 
Result so far: 536.9166
Subtract 72 from 80 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Our division results in 536.9166 with a remaining 8e-05.