Let's divide 643824 by 39
Let's see how many times 39 fits into 643824.

Moving on to step 1:
If we divide 6 by 39, we get 0 and a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 39

On to step 2:
When dividing 64 by 39, we get 1 with a remainder of 25.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 39 from 64 leaves us with 25.
Include the next digit (3) from the dividend after 25, then repeat: 253 / 39

Step 3:
39 goes into 253 6 times with a remainder of 19.
Put 6 as the next digit of the answer. 
Result so far: 16.0
The remainder is 19 after subtracting 234 from 253.
Grab the next digit (8) from the dividend, add it to 19, then carry on: 198 / 39

Moving on to step 4:
The number 39 fits into 198 5 times, leaving a remainder of 3.
Put 5 as the next digit of the answer. 
Result so far: 165.0
Subtract 195 from 198 to get 3.
Take the next digit (2) from the dividend and append it to 3, then repeat: 32 / 39

Let's proceed to step 5:
The number 39 fits into 32 0 times, leaving a remainder of 32.
Record the quotient 0 as the next digit in the result. 
Result so far: 1650.0
Subtract 0 from 32 to get 32.
Take the next digit (4) from the dividend and append it to 32, then repeat: 324 / 39

Going ahead to step 6:
The number 39 fits into 324 8 times, leaving a remainder of 12.
The number 8 becomes the next digit in our result. 
Result so far: 16508.0
If we take 312 away from 324, 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.

On to step 7:
If we divide 120 by 39, we get 3 and a remainder of 3.
The number 3 becomes the next digit in our result. 
Result so far: 16508.3
If we subtract 117 from 120, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 8:
39 can be fit into 30 0 times, resulting in a remainder of 30.
The next digit of our result is 0. 
Result so far: 16508.3
The remainder is 30 after subtracting 0 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 9:
When dividing 300 by 39, we get 7 with a remainder of 27.
The number 7 becomes the next digit in our result. 
Result so far: 16508.307
Subtract 273 from 300 to get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Advancing to step 10:
The number 39 fits into 270 6 times, leaving a remainder of 36.
Put 6 as the next digit of the answer. 
Result so far: 16508.3076
The remainder is 36 after subtracting 234 from 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Advancing to step 11:
If we divide 360 by 39, we get 9 and a remainder of 9.
Put 9 as the next digit of the answer. 
Result so far: 16508.30769
If we take 351 away from 360, we end up with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Let's proceed to step 12:
90 divided by 39 is 2 with a remainder of 12.
Use 2 as the next digit of our solution. 
Result so far: 16508.307692
Subtract 78 from 90 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 13:
When dividing 120 by 39, we get 3 with a remainder of 3.
The next digit of our result is 3. 
Result so far: 16508.3076923
The remainder is 3 after subtracting 117 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Let's proceed to step 14:
If we divide 30 by 39, we get 0 and a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 16508.3076923
The remainder is 30 after subtracting 0 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Our division results in 16508.3076923 with a remaining 3e-08.