We look at the division of 643040 by 26 
Our goal is to divide 643040 by 26.

On to step 1:
6 divided by 26 is 0 with 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.
Take the next digit (4) from the dividend and append it to 6, then repeat: 64 / 26

Going ahead to step 2:
26 goes into 64 2 times with a remainder of 12.
The next digit of our result is 2. 
Result so far: 2.0
Subtract 52 from 64 to get 12.
Fetch the next digit (3) from the dividend, attach it to 12 and continue: 123 / 26

Step 3:
26 goes into 123 4 times with a remainder of 19.
The next digit of our result is 4. 
Result so far: 24.0
If we take 104 away from 123, we end up with 19.
Grab the next digit (0) from the dividend, add it to 19, then carry on: 190 / 26

Step 4:
26 goes into 190 7 times with a remainder of 8.
The next digit of our result is 7. 
Result so far: 247.0
Deduct 182 from 190 and we're left with 8.
Take the next digit (4) from the dividend and append it to 8, then repeat: 84 / 26

Moving on to step 5:
26 goes into 84 3 times with a remainder of 6.
Put 3 as the next digit of the answer. 
Result so far: 2473.0
If we take 78 away from 84, we end up with 6.
Take the next digit (0) from the dividend and append it to 6, then repeat: 60 / 26

On to step 6:
26 can be fit into 60 2 times, resulting in a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 24732.0
The remainder is 8 after subtracting 52 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 7:
If we divide 80 by 26, we get 3 and a remainder of 2.
The next digit of our result is 3. 
Result so far: 24732.3
If we subtract 78 from 80, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 8:
26 can be fit into 20 0 times, resulting in a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 24732.3
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 9:
If we divide 200 by 26, we get 7 and a remainder of 18.
Record the quotient 7 as the next digit in the result. 
Result so far: 24732.307
If we subtract 182 from 200, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 10:
26 can be fit into 180 6 times, resulting in a remainder of 24.
Use 6 as the next digit of our solution. 
Result so far: 24732.3076
The remainder is 24 after subtracting 156 from 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 11:
The number 26 fits into 240 9 times, leaving a remainder of 6.
Write down 9 as next digit of the result. 
Result so far: 24732.30769
The remainder is 6 after subtracting 234 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 12:
60 divided by 26 is 2 with a remainder of 8.
Use 2 as the next digit of our solution. 
Result so far: 24732.307692
If we subtract 52 from 60, we get 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 13:
When dividing 80 by 26, we get 3 with a remainder of 2.
Record the quotient 3 as the next digit in the result. 
Result so far: 24732.3076923
Subtracting 78 from 80 leaves us 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.

Let's proceed to step 14:
The number 26 fits into 20 0 times, leaving a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 24732.3076923
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

After the division, we end up with 24732.3076923 and a remainder of 2e-08.