We look at the division of 100643 by 64 
Let's see how many times 64 fits into 100643.

On to step 1:
If we divide 1 by 64, we get 0 and a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Grab the next digit (0) from the dividend, add it to 1, then carry on: 10 / 64

Let's proceed to step 2:
64 goes into 10 0 times with a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 10, we get 10.
Fetch the next digit (0) from the dividend, attach it to 10 and continue: 100 / 64

On to step 3:
64 goes into 100 1 times with a remainder of 36.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 64 from 100, we get 36.
Append the next digit (6) from the dividend to 36 and continue with: 366 / 64

Moving on to step 4:
64 can be fit into 366 5 times, resulting in a remainder of 46.
The next digit of our result is 5. 
Result so far: 15.0
Subtract 320 from 366 to get 46.
Take the next digit (4) from the dividend and append it to 46, then repeat: 464 / 64

Step 5:
When dividing 464 by 64, we get 7 with a remainder of 16.
Use 7 as the next digit of our solution. 
Result so far: 157.0
Deduct 448 from 464 and we're left with 16.
Include the next digit (3) from the dividend after 16, then repeat: 163 / 64

On to step 6:
When dividing 163 by 64, we get 2 with a remainder of 35.
Write down 2 as next digit of the result. 
Result so far: 1572.0
Subtracting 128 from 163 leaves us with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Step 7:
When dividing 350 by 64, we get 5 with a remainder of 30.
Use 5 as the next digit of our solution. 
Result so far: 1572.5
Subtract 320 from 350 to get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 8:
64 goes into 300 4 times with a remainder of 44.
The number 4 becomes the next digit in our result. 
Result so far: 1572.54
Subtracting 256 from 300 leaves us with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

On to step 9:
If we divide 440 by 64, we get 6 and a remainder of 56.
The next digit of our result is 6. 
Result so far: 1572.546
Subtracting 384 from 440 leaves us with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

On to step 10:
64 goes into 560 8 times with a remainder of 48.
Put 8 as the next digit of the answer. 
Result so far: 1572.5468
If we subtract 512 from 560, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Going ahead to step 11:
480 divided by 64 is 7 with a remainder of 32.
Record the quotient 7 as the next digit in the result. 
Result so far: 1572.54687
If we subtract 448 from 480, we get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Moving on to step 12:
64 goes into 320 5 times with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 1572.546875
The remainder is 0 after subtracting 320 from 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 13:
64 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 1572.546875
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 14:
64 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 1572.546875
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 1572.546875 and a remainder of 0.0.