We look at the division of 28929557 by 643 
We want to figure out the number of times 28929557 can be divided by 643.

On to step 1:
When dividing 2 by 643, we get 0 with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Take the next digit (8) from the dividend and append it to 2, then repeat: 28 / 643

Going ahead to step 2:
If we divide 28 by 643, we get 0 and a remainder of 28.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 28, we end up with 28.
Take the next digit (9) from the dividend and append it to 28, then repeat: 289 / 643

Moving on to step 3:
289 divided by 643 is 0 with a remainder of 289.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 289 and we're left with 289.
Include the next digit (2) from the dividend after 289, then repeat: 2892 / 643

Moving on to step 4:
If we divide 2892 by 643, we get 4 and a remainder of 320.
The next digit of our result is 4. 
Result so far: 4.0
If we subtract 2572 from 2892, we get 320.
Bring next digit (9) of the dividend behind the 320 and repeat the process: 3209 / 643

Moving on to step 5:
643 goes into 3209 4 times with a remainder of 637.
Use 4 as the next digit of our solution. 
Result so far: 44.0
Subtract 2572 from 3209 to get 637.
Take the next digit (5) from the dividend and append it to 637, then repeat: 6375 / 643

Going ahead to step 6:
643 can be fit into 6375 9 times, resulting in a remainder of 588.
The number 9 becomes the next digit in our result. 
Result so far: 449.0
If we take 5787 away from 6375, we end up with 588.
Fetch the next digit (5) from the dividend, attach it to 588 and continue: 5885 / 643

On to step 7:
643 can be fit into 5885 9 times, resulting in a remainder of 98.
The next digit of our result is 9. 
Result so far: 4499.0
Deduct 5787 from 5885 and we're left with 98.
Include the next digit (7) from the dividend after 98, then repeat: 987 / 643

On to step 8:
643 can be fit into 987 1 times, resulting in a remainder of 344.
The number 1 becomes the next digit in our result. 
Result so far: 44991.0
Subtract 643 from 987 to get 344.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3440, and continue the process.

Step 9:
The number 643 fits into 3440 5 times, leaving a remainder of 225.
Put 5 as the next digit of the answer. 
Result so far: 44991.5
Deduct 3215 from 3440 and we're left with 225.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2250, and continue the process.

Going ahead to step 10:
When dividing 2250 by 643, we get 3 with a remainder of 321.
Use 3 as the next digit of our solution. 
Result so far: 44991.53
If we take 1929 away from 2250, we end up with 321.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3210, and continue the process.

Going ahead to step 11:
643 goes into 3210 4 times with a remainder of 638.
Record the quotient 4 as the next digit in the result. 
Result so far: 44991.534
Deduct 2572 from 3210 and we're left with 638.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6380, and continue the process.

Let's proceed to step 12:
The number 643 fits into 6380 9 times, leaving a remainder of 593.
Put 9 as the next digit of the answer. 
Result so far: 44991.5349
Subtracting 5787 from 6380 leaves us with 593.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5930, and continue the process.

Moving on to step 13:
When dividing 5930 by 643, we get 9 with a remainder of 143.
Record the quotient 9 as the next digit in the result. 
Result so far: 44991.53499
The remainder is 143 after subtracting 5787 from 5930.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1430, and continue the process.

In conclusion, the division gives 44991.53499 with a balance of 0.000143.