We divide 10639717 by 643
We want to figure out the number of times 10639717 can be divided by 643.

Going ahead to step 1:
643 goes into 1 0 times with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Include the next digit (0) from the dividend after 1, then repeat: 10 / 643

Advancing to step 2:
When dividing 10 by 643, we get 0 with a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 10, we end up with 10.
Fetch the next digit (6) from the dividend, attach it to 10 and continue: 106 / 643

On to step 3:
643 can be fit into 106 0 times, resulting in a remainder of 106.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 106 leaves us with 106.
Bring next digit (3) of the dividend behind the 106 and repeat the process: 1063 / 643

Let's proceed to step 4:
The number 643 fits into 1063 1 times, leaving a remainder of 420.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 643 away from 1063, we end up with 420.
Fetch the next digit (9) from the dividend, attach it to 420 and continue: 4209 / 643

Advancing to step 5:
When dividing 4209 by 643, we get 6 with a remainder of 351.
Put 6 as the next digit of the answer. 
Result so far: 16.0
Subtract 3858 from 4209 to get 351.
Bring next digit (7) of the dividend behind the 351 and repeat the process: 3517 / 643

Moving on to step 6:
643 can be fit into 3517 5 times, resulting in a remainder of 302.
The number 5 becomes the next digit in our result. 
Result so far: 165.0
Subtract 3215 from 3517 to get 302.
Append the next digit (1) from the dividend to 302 and continue with: 3021 / 643

Moving on to step 7:
643 can be fit into 3021 4 times, resulting in a remainder of 449.
Use 4 as the next digit of our solution. 
Result so far: 1654.0
Subtracting 2572 from 3021 leaves us with 449.
Fetch the next digit (7) from the dividend, attach it to 449 and continue: 4497 / 643

On to step 8:
643 goes into 4497 6 times with a remainder of 639.
Use 6 as the next digit of our solution. 
Result so far: 16546.0
Deduct 3858 from 4497 and we're left with 639.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6390, and continue the process.

Let's proceed to step 9:
If we divide 6390 by 643, we get 9 and a remainder of 603.
The number 9 becomes the next digit in our result. 
Result so far: 16546.9
If we take 5787 away from 6390, we end up with 603.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6030, and continue the process.

Advancing to step 10:
When dividing 6030 by 643, we get 9 with a remainder of 243.
The number 9 becomes the next digit in our result. 
Result so far: 16546.99
Subtract 5787 from 6030 to get 243.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2430, and continue the process.

In conclusion, the division gives 16546.99 with a balance of 0.243.