Let's divide 643242 by 39
Let's see how many times 39 fits into 643242.

Step 1:
If we divide 6 by 39, we get 0 and a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Fetch the next digit (4) from the dividend, attach it to 6 and continue: 64 / 39

Going ahead to step 2:
64 divided by 39 is 1 with a remainder of 25.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 39 from 64 to get 25.
Grab the next digit (3) from the dividend, add it to 25, then carry on: 253 / 39

On to step 3:
The number 39 fits into 253 6 times, leaving a remainder of 19.
Use 6 as the next digit of our solution. 
Result so far: 16.0
If we take 234 away from 253, we end up with 19.
Take the next digit (2) from the dividend and append it to 19, then repeat: 192 / 39

Step 4:
When dividing 192 by 39, we get 4 with a remainder of 36.
Write down 4 as next digit of the result. 
Result so far: 164.0
If we subtract 156 from 192, we get 36.
Include the next digit (4) from the dividend after 36, then repeat: 364 / 39

Moving on to step 5:
When dividing 364 by 39, we get 9 with a remainder of 13.
The next digit of our result is 9. 
Result so far: 1649.0
If we take 351 away from 364, we end up with 13.
Include the next digit (2) from the dividend after 13, then repeat: 132 / 39

Step 6:
132 divided by 39 is 3 with a remainder of 15.
Use 3 as the next digit of our solution. 
Result so far: 16493.0
The remainder is 15 after subtracting 117 from 132.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Let's proceed to step 7:
39 goes into 150 3 times with a remainder of 33.
Record the quotient 3 as the next digit in the result. 
Result so far: 16493.3
If we take 117 away from 150, we end up with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Moving on to step 8:
When dividing 330 by 39, we get 8 with a remainder of 18.
Write down 8 as next digit of the result. 
Result so far: 16493.38
Subtracting 312 from 330 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Let's proceed to step 9:
If we divide 180 by 39, we get 4 and a remainder of 24.
Write down 4 as next digit of the result. 
Result so far: 16493.384
Subtract 156 from 180 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 10:
240 divided by 39 is 6 with a remainder of 6.
Record the quotient 6 as the next digit in the result. 
Result so far: 16493.3846
Deduct 234 from 240 and we're left 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.

Going ahead to step 11:
39 can be fit into 60 1 times, resulting in a remainder of 21.
The next digit of our result is 1. 
Result so far: 16493.38461
Subtract 39 from 60 to get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Step 12:
The number 39 fits into 210 5 times, leaving a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 16493.384615
Subtract 195 from 210 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Let's proceed to step 13:
150 divided by 39 is 3 with a remainder of 33.
The next digit of our result is 3. 
Result so far: 16493.3846153
If we take 117 away from 150, we end up with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Let's proceed to step 14:
When dividing 330 by 39, we get 8 with a remainder of 18.
The number 8 becomes the next digit in our result. 
Result so far: 16493.38461538
Deduct 312 from 330 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

After the division, we end up with 16493.38461538 and a remainder of 1.8e-08.