We divide 28559000 by 643
Let's see how many times 643 fits into 28559000.

On to step 1:
If we divide 2 by 643, we get 0 and a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Fetch the next digit (8) from the dividend, attach it to 2 and continue: 28 / 643

On to step 2:
28 divided by 643 is 0 with a remainder of 28.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 28 and we're left with 28.
Bring next digit (5) of the dividend behind the 28 and repeat the process: 285 / 643

Let's proceed to step 3:
643 goes into 285 0 times with a remainder of 285.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 285 after subtracting 0 from 285.
Bring next digit (5) of the dividend behind the 285 and repeat the process: 2855 / 643

Advancing to step 4:
The number 643 fits into 2855 4 times, leaving a remainder of 283.
Put 4 as the next digit of the answer. 
Result so far: 4.0
The remainder is 283 after subtracting 2572 from 2855.
Take the next digit (9) from the dividend and append it to 283, then repeat: 2839 / 643

Let's proceed to step 5:
2839 divided by 643 is 4 with a remainder of 267.
Put 4 as the next digit of the answer. 
Result so far: 44.0
If we subtract 2572 from 2839, we get 267.
Take the next digit (0) from the dividend and append it to 267, then repeat: 2670 / 643

Moving on to step 6:
643 can be fit into 2670 4 times, resulting in a remainder of 98.
Use 4 as the next digit of our solution. 
Result so far: 444.0
The remainder is 98 after subtracting 2572 from 2670.
Take the next digit (0) from the dividend and append it to 98, then repeat: 980 / 643

Advancing to step 7:
When dividing 980 by 643, we get 1 with a remainder of 337.
The next digit of our result is 1. 
Result so far: 4441.0
If we subtract 643 from 980, we get 337.
Take the next digit (0) from the dividend and append it to 337, then repeat: 3370 / 643

Advancing to step 8:
When dividing 3370 by 643, we get 5 with a remainder of 155.
Put 5 as the next digit of the answer. 
Result so far: 44415.0
If we subtract 3215 from 3370, we get 155.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1550, and continue the process.

Let's proceed to step 9:
If we divide 1550 by 643, we get 2 and a remainder of 264.
Put 2 as the next digit of the answer. 
Result so far: 44415.2
If we take 1286 away from 1550, we end up with 264.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2640, and continue the process.

Let's proceed to step 10:
When dividing 2640 by 643, we get 4 with a remainder of 68.
Write down 4 as next digit of the result. 
Result so far: 44415.24
Subtracting 2572 from 2640 leaves us with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Moving on to step 11:
643 can be fit into 680 1 times, resulting in a remainder of 37.
Put 1 as the next digit of the answer. 
Result so far: 44415.241
If we take 643 away from 680, we end up 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 12:
643 can be fit into 370 0 times, resulting in a remainder of 370.
The number 0 becomes the next digit in our result. 
Result so far: 44415.241
Deduct 0 from 370 and we're left with 370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3700, and continue the process.

Step 13:
643 can be fit into 3700 5 times, resulting in a remainder of 485.
Record the quotient 5 as the next digit in the result. 
Result so far: 44415.24105
If we subtract 3215 from 3700, we get 485.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4850, and continue the process.

Moving on to step 14:
When dividing 4850 by 643, we get 7 with a remainder of 349.
Put 7 as the next digit of the answer. 
Result so far: 44415.241057
The remainder is 349 after subtracting 4501 from 4850.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3490, and continue the process.

Advancing to step 15:
643 goes into 3490 5 times with a remainder of 275.
Use 5 as the next digit of our solution. 
Result so far: 44415.2410575
Deduct 3215 from 3490 and we're left with 275.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2750, and continue the process.

Step 16:
If we divide 2750 by 643, we get 4 and a remainder of 178.
Put 4 as the next digit of the answer. 
Result so far: 44415.24105754
If we take 2572 away from 2750, we end up with 178.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1780, and continue the process.

The final result is 44415.24105754 with a remainder of 1.78e-07.