We look at the division of 25940640 by 399 
We're looking to find how many times 399 goes into 25940640.

On to step 1:
399 can be fit into 2 0 times, resulting in a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Grab the next digit (5) from the dividend, add it to 2, then carry on: 25 / 399

Going ahead to step 2:
When dividing 25 by 399, we get 0 with a remainder of 25.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 25 to get 25.
Grab the next digit (9) from the dividend, add it to 25, then carry on: 259 / 399

Going ahead to step 3:
If we divide 259 by 399, we get 0 and a remainder of 259.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 259 leaves us with 259.
Fetch the next digit (4) from the dividend, attach it to 259 and continue: 2594 / 399

Moving on to step 4:
399 goes into 2594 6 times with a remainder of 200.
Put 6 as the next digit of the answer. 
Result so far: 6.0
Subtract 2394 from 2594 to get 200.
Append the next digit (0) from the dividend to 200 and continue with: 2000 / 399

Going ahead to step 5:
If we divide 2000 by 399, we get 5 and a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 65.0
If we take 1995 away from 2000, we end up with 5.
Take the next digit (6) from the dividend and append it to 5, then repeat: 56 / 399

Advancing to step 6:
56 divided by 399 is 0 with a remainder of 56.
Record the quotient 0 as the next digit in the result. 
Result so far: 650.0
Subtracting 0 from 56 leaves us with 56.
Take the next digit (4) from the dividend and append it to 56, then repeat: 564 / 399

Going ahead to step 7:
399 goes into 564 1 times with a remainder of 165.
Put 1 as the next digit of the answer. 
Result so far: 6501.0
Subtracting 399 from 564 leaves us with 165.
Fetch the next digit (0) from the dividend, attach it to 165 and continue: 1650 / 399

Step 8:
If we divide 1650 by 399, we get 4 and a remainder of 54.
The number 4 becomes the next digit in our result. 
Result so far: 65014.0
Subtract 1596 from 1650 to get 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Advancing to step 9:
540 divided by 399 is 1 with a remainder of 141.
Write down 1 as next digit of the result. 
Result so far: 65014.1
The remainder is 141 after subtracting 399 from 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1410, and continue the process.

On to step 10:
399 can be fit into 1410 3 times, resulting in a remainder of 213.
Write down 3 as next digit of the result. 
Result so far: 65014.13
Subtract 1197 from 1410 to get 213.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2130, and continue the process.

On to step 11:
When dividing 2130 by 399, we get 5 with a remainder of 135.
Write down 5 as next digit of the result. 
Result so far: 65014.135
Subtract 1995 from 2130 to get 135.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

Advancing to step 12:
399 goes into 1350 3 times with a remainder of 153.
Record the quotient 3 as the next digit in the result. 
Result so far: 65014.1353
If we subtract 1197 from 1350, we get 153.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1530, and continue the process.

Advancing to step 13:
1530 divided by 399 is 3 with a remainder of 333.
Put 3 as the next digit of the answer. 
Result so far: 65014.13533
The remainder is 333 after subtracting 1197 from 1530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3330, and continue the process.

After the division, we end up with 65014.13533 and a remainder of 0.000333.