We're dividing 57343018 by 643 
Our goal is to divide 57343018 by 643.

Step 1:
643 goes into 5 0 times with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Take the next digit (7) from the dividend and append it to 5, then repeat: 57 / 643

Going ahead to step 2:
If we divide 57 by 643, we get 0 and a remainder of 57.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 57 after subtracting 0 from 57.
Bring next digit (3) of the dividend behind the 57 and repeat the process: 573 / 643

Going ahead to step 3:
The number 643 fits into 573 0 times, leaving a remainder of 573.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 573 to get 573.
Fetch the next digit (4) from the dividend, attach it to 573 and continue: 5734 / 643

Advancing to step 4:
When dividing 5734 by 643, we get 8 with a remainder of 590.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
The remainder is 590 after subtracting 5144 from 5734.
Include the next digit (3) from the dividend after 590, then repeat: 5903 / 643

Let's proceed to step 5:
The number 643 fits into 5903 9 times, leaving a remainder of 116.
Put 9 as the next digit of the answer. 
Result so far: 89.0
If we take 5787 away from 5903, we end up with 116.
Take the next digit (0) from the dividend and append it to 116, then repeat: 1160 / 643

Moving on to step 6:
The number 643 fits into 1160 1 times, leaving a remainder of 517.
The next digit of our result is 1. 
Result so far: 891.0
Subtracting 643 from 1160 leaves us with 517.
Append the next digit (1) from the dividend to 517 and continue with: 5171 / 643

Step 7:
5171 divided by 643 is 8 with a remainder of 27.
The number 8 becomes the next digit in our result. 
Result so far: 8918.0
Deduct 5144 from 5171 and we're left with 27.
Bring next digit (8) of the dividend behind the 27 and repeat the process: 278 / 643

On to step 8:
The number 643 fits into 278 0 times, leaving a remainder of 278.
Use 0 as the next digit of our solution. 
Result so far: 89180.0
The remainder is 278 after subtracting 0 from 278.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2780, and continue the process.

Step 9:
The number 643 fits into 2780 4 times, leaving a remainder of 208.
Put 4 as the next digit of the answer. 
Result so far: 89180.4
Subtracting 2572 from 2780 leaves us with 208.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2080, and continue the process.

Step 10:
643 goes into 2080 3 times with a remainder of 151.
Record the quotient 3 as the next digit in the result. 
Result so far: 89180.43
Deduct 1929 from 2080 and we're left with 151.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1510, and continue the process.

Going ahead to step 11:
When dividing 1510 by 643, we get 2 with a remainder of 224.
The number 2 becomes the next digit in our result. 
Result so far: 89180.432
Subtracting 1286 from 1510 leaves us with 224.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2240, and continue the process.

Moving on to step 12:
2240 divided by 643 is 3 with a remainder of 311.
Write down 3 as next digit of the result. 
Result so far: 89180.4323
If we subtract 1929 from 2240, we get 311.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3110, and continue the process.

Step 13:
643 goes into 3110 4 times with a remainder of 538.
Write down 4 as next digit of the result. 
Result so far: 89180.43234
If we subtract 2572 from 3110, we get 538.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5380, and continue the process.

On to step 14:
The number 643 fits into 5380 8 times, leaving a remainder of 236.
Put 8 as the next digit of the answer. 
Result so far: 89180.432348
Subtracting 5144 from 5380 leaves us with 236.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2360, and continue the process.

On to step 15:
The number 643 fits into 2360 3 times, leaving a remainder of 431.
Record the quotient 3 as the next digit in the result. 
Result so far: 89180.4323483
If we take 1929 away from 2360, we end up with 431.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4310, and continue the process.

Step 16:
If we divide 4310 by 643, we get 6 and a remainder of 452.
The number 6 becomes the next digit in our result. 
Result so far: 89180.43234836
The remainder is 452 after subtracting 3858 from 4310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4520, and continue the process.

The final outcome is 89180.43234836, with a leftover of 4.52e-07.