643944 divided by 38 
We're looking to find how many times 38 goes into 643944.

Advancing to step 1:
If we divide 6 by 38, 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 / 38

On to step 2:
64 divided by 38 is 1 with a remainder of 26.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 38 from 64, we get 26.
Take the next digit (3) from the dividend and append it to 26, then repeat: 263 / 38

Let's proceed to step 3:
When dividing 263 by 38, we get 6 with a remainder of 35.
Put 6 as the next digit of the answer. 
Result so far: 16.0
Subtracting 228 from 263 leaves us with 35.
Append the next digit (9) from the dividend to 35 and continue with: 359 / 38

On to step 4:
359 divided by 38 is 9 with a remainder of 17.
The next digit of our result is 9. 
Result so far: 169.0
Deduct 342 from 359 and we're left with 17.
Fetch the next digit (4) from the dividend, attach it to 17 and continue: 174 / 38

Advancing to step 5:
When dividing 174 by 38, we get 4 with a remainder of 22.
Record the quotient 4 as the next digit in the result. 
Result so far: 1694.0
The remainder is 22 after subtracting 152 from 174.
Grab the next digit (4) from the dividend, add it to 22, then carry on: 224 / 38

On to step 6:
When dividing 224 by 38, we get 5 with a remainder of 34.
Put 5 as the next digit of the answer. 
Result so far: 16945.0
If we subtract 190 from 224, we get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Moving on to step 7:
If we divide 340 by 38, we get 8 and a remainder of 36.
Record the quotient 8 as the next digit in the result. 
Result so far: 16945.8
If we take 304 away from 340, we end up with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Step 8:
The number 38 fits into 360 9 times, leaving a remainder of 18.
Use 9 as the next digit of our solution. 
Result so far: 16945.89
The remainder is 18 after subtracting 342 from 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

On to step 9:
38 can be fit into 180 4 times, resulting in a remainder of 28.
Put 4 as the next digit of the answer. 
Result so far: 16945.894
Subtract 152 from 180 to get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Moving on to step 10:
When dividing 280 by 38, we get 7 with a remainder of 14.
The next digit of our result is 7. 
Result so far: 16945.8947
Subtract 266 from 280 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

On to step 11:
140 divided by 38 is 3 with a remainder of 26.
The number 3 becomes the next digit in our result. 
Result so far: 16945.89473
Deduct 114 from 140 and we're left with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Advancing to step 12:
260 divided by 38 is 6 with a remainder of 32.
The number 6 becomes the next digit in our result. 
Result so far: 16945.894736
The remainder is 32 after subtracting 228 from 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 13:
The number 38 fits into 320 8 times, leaving a remainder of 16.
Write down 8 as next digit of the result. 
Result so far: 16945.8947368
If we take 304 away from 320, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 14:
38 can be fit into 160 4 times, resulting in a remainder of 8.
The next digit of our result is 4. 
Result so far: 16945.89473684
Subtracting 152 from 160 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.

Our division results in 16945.89473684 with a remaining 8e-09.