We divide 643443 by 19
We want to divide 643443 by 19.

Let's proceed to step 1:
When dividing 6 by 19, we get 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Include the next digit (4) from the dividend after 6, then repeat: 64 / 19

On to step 2:
The number 19 fits into 64 3 times, leaving a remainder of 7.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we take 57 away from 64, we end up with 7.
Append the next digit (3) from the dividend to 7 and continue with: 73 / 19

On to step 3:
When dividing 73 by 19, we get 3 with a remainder of 16.
The number 3 becomes the next digit in our result. 
Result so far: 33.0
If we subtract 57 from 73, we get 16.
Append the next digit (4) from the dividend to 16 and continue with: 164 / 19

Let's proceed to step 4:
164 divided by 19 is 8 with a remainder of 12.
Record the quotient 8 as the next digit in the result. 
Result so far: 338.0
Deduct 152 from 164 and we're left with 12.
Take the next digit (4) from the dividend and append it to 12, then repeat: 124 / 19

Moving on to step 5:
19 goes into 124 6 times with a remainder of 10.
Write down 6 as next digit of the result. 
Result so far: 3386.0
If we subtract 114 from 124, we get 10.
Grab the next digit (3) from the dividend, add it to 10, then carry on: 103 / 19

On to step 6:
19 goes into 103 5 times with a remainder of 8.
Use 5 as the next digit of our solution. 
Result so far: 33865.0
If we take 95 away from 103, we end up 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.

Going ahead to step 7:
If we divide 80 by 19, we get 4 and a remainder of 4.
The next digit of our result is 4. 
Result so far: 33865.4
Subtract 76 from 80 to 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.

Moving on to step 8:
19 goes into 40 2 times with a remainder of 2.
Write down 2 as next digit of the result. 
Result so far: 33865.42
Deduct 38 from 40 and we're left 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 9:
When dividing 20 by 19, we get 1 with a remainder of 1.
Write down 1 as next digit of the result. 
Result so far: 33865.421
Subtracting 19 from 20 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 10:
The number 19 fits into 10 0 times, leaving a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 33865.421
If we take 0 away from 10, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 11:
If we divide 100 by 19, we get 5 and a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 33865.42105
Subtracting 95 from 100 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 12:
The number 19 fits into 50 2 times, leaving a remainder of 12.
Put 2 as the next digit of the answer. 
Result so far: 33865.421052
If we take 38 away from 50, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 13:
When dividing 120 by 19, we get 6 with a remainder of 6.
Record the quotient 6 as the next digit in the result. 
Result so far: 33865.4210526
Subtracting 114 from 120 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 14:
The number 19 fits into 60 3 times, leaving a remainder of 3.
Use 3 as the next digit of our solution. 
Result so far: 33865.42105263
Deduct 57 from 60 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

In conclusion, the division gives 33865.42105263 with a balance of 3e-09.