643968 divided by 41 
Let's see how many times 41 fits into 643968.

Step 1:
6 divided by 41 is 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 41

On to step 2:
When dividing 64 by 41, we get 1 with a remainder of 23.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 41 from 64 and we're left with 23.
Grab the next digit (3) from the dividend, add it to 23, then carry on: 233 / 41

Step 3:
When dividing 233 by 41, we get 5 with a remainder of 28.
Put 5 as the next digit of the answer. 
Result so far: 15.0
Subtracting 205 from 233 leaves us with 28.
Take the next digit (9) from the dividend and append it to 28, then repeat: 289 / 41

Going ahead to step 4:
If we divide 289 by 41, we get 7 and a remainder of 2.
Write down 7 as next digit of the result. 
Result so far: 157.0
If we subtract 287 from 289, we get 2.
Take the next digit (6) from the dividend and append it to 2, then repeat: 26 / 41

Moving on to step 5:
41 goes into 26 0 times with a remainder of 26.
Write down 0 as next digit of the result. 
Result so far: 1570.0
Deduct 0 from 26 and we're left with 26.
Fetch the next digit (8) from the dividend, attach it to 26 and continue: 268 / 41

Let's proceed to step 6:
When dividing 268 by 41, we get 6 with a remainder of 22.
Use 6 as the next digit of our solution. 
Result so far: 15706.0
Subtract 246 from 268 to get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Moving on to step 7:
220 divided by 41 is 5 with a remainder of 15.
The next digit of our result is 5. 
Result so far: 15706.5
Deduct 205 from 220 and we're left with 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 8:
If we divide 150 by 41, we get 3 and a remainder of 27.
Record the quotient 3 as the next digit in the result. 
Result so far: 15706.53
Subtract 123 from 150 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.

Step 9:
The number 41 fits into 270 6 times, leaving a remainder of 24.
Write down 6 as next digit of the result. 
Result so far: 15706.536
Deduct 246 from 270 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Advancing to step 10:
41 can be fit into 240 5 times, resulting in a remainder of 35.
Record the quotient 5 as the next digit in the result. 
Result so far: 15706.5365
If we subtract 205 from 240, we get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Moving on to step 11:
41 goes into 350 8 times with a remainder of 22.
Use 8 as the next digit of our solution. 
Result so far: 15706.53658
The remainder is 22 after subtracting 328 from 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 12:
When dividing 220 by 41, we get 5 with a remainder of 15.
Write down 5 as next digit of the result. 
Result so far: 15706.536585
Deduct 205 from 220 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 13:
41 can be fit into 150 3 times, resulting in a remainder of 27.
The number 3 becomes the next digit in our result. 
Result so far: 15706.5365853
Subtract 123 from 150 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.

Going ahead to step 14:
270 divided by 41 is 6 with a remainder of 24.
Record the quotient 6 as the next digit in the result. 
Result so far: 15706.53658536
If we take 246 away from 270, we end up with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

The final result is 15706.53658536 with a remainder of 2.4e-08.