We divide 640393 by 43
We want to divide 640393 by 43.

Going ahead to step 1:
43 goes into 6 0 times with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Fetch the next digit (4) from the dividend, attach it to 6 and continue: 64 / 43

Step 2:
64 divided by 43 is 1 with a remainder of 21.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 43 from 64 to get 21.
Grab the next digit (0) from the dividend, add it to 21, then carry on: 210 / 43

Advancing to step 3:
210 divided by 43 is 4 with a remainder of 38.
The number 4 becomes the next digit in our result. 
Result so far: 14.0
If we take 172 away from 210, we end up with 38.
Fetch the next digit (3) from the dividend, attach it to 38 and continue: 383 / 43

Moving on to step 4:
43 goes into 383 8 times with a remainder of 39.
Record the quotient 8 as the next digit in the result. 
Result so far: 148.0
Subtracting 344 from 383 leaves us with 39.
Append the next digit (9) from the dividend to 39 and continue with: 399 / 43

Moving on to step 5:
The number 43 fits into 399 9 times, leaving a remainder of 12.
The next digit of our result is 9. 
Result so far: 1489.0
Subtracting 387 from 399 leaves us with 12.
Grab the next digit (3) from the dividend, add it to 12, then carry on: 123 / 43

Going ahead to step 6:
When dividing 123 by 43, we get 2 with a remainder of 37.
Write down 2 as next digit of the result. 
Result so far: 14892.0
Subtracting 86 from 123 leaves us with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Advancing to step 7:
If we divide 370 by 43, we get 8 and a remainder of 26.
The number 8 becomes the next digit in our result. 
Result so far: 14892.8
Deduct 344 from 370 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.

Step 8:
43 goes into 260 6 times with a remainder of 2.
Use 6 as the next digit of our solution. 
Result so far: 14892.86
The remainder is 2 after subtracting 258 from 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 9:
The number 43 fits into 20 0 times, leaving a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 14892.86
If we take 0 away from 20, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 10:
200 divided by 43 is 4 with a remainder of 28.
The number 4 becomes the next digit in our result. 
Result so far: 14892.8604
The remainder is 28 after subtracting 172 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Step 11:
The number 43 fits into 280 6 times, leaving a remainder of 22.
Put 6 as the next digit of the answer. 
Result so far: 14892.86046
Subtracting 258 from 280 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Going ahead to step 12:
If we divide 220 by 43, we get 5 and a remainder of 5.
The next digit of our result is 5. 
Result so far: 14892.860465
If we subtract 215 from 220, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 13:
If we divide 50 by 43, we get 1 and a remainder of 7.
The number 1 becomes the next digit in our result. 
Result so far: 14892.8604651
Subtract 43 from 50 to get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Step 14:
43 can be fit into 70 1 times, resulting in a remainder of 27.
The number 1 becomes the next digit in our result. 
Result so far: 14892.86046511
Deduct 43 from 70 and we're left with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

The quotient of the division is 14892.86046511, and the remainder is 2.7e-08.