645333 ÷ 64 
We want to figure out the number of times 645333 can be divided by 64.

Moving on to step 1:
If we divide 6 by 64, we get 0 and a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 64

Going ahead to step 2:
64 goes into 64 1 times with a remainder of 0.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 64 from 64 to get 0.
Include the next digit (5) from the dividend after 0, then repeat: 5 / 64

Advancing to step 3:
64 can be fit into 5 0 times, resulting in a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
If we take 0 away from 5, we end up with 5.
Grab the next digit (3) from the dividend, add it to 5, then carry on: 53 / 64

Moving on to step 4:
64 can be fit into 53 0 times, resulting in a remainder of 53.
Use 0 as the next digit of our solution. 
Result so far: 100.0
Subtract 0 from 53 to get 53.
Append the next digit (3) from the dividend to 53 and continue with: 533 / 64

Advancing to step 5:
When dividing 533 by 64, we get 8 with a remainder of 21.
Use 8 as the next digit of our solution. 
Result so far: 1008.0
If we take 512 away from 533, we end up with 21.
Include the next digit (3) from the dividend after 21, then repeat: 213 / 64

Step 6:
The number 64 fits into 213 3 times, leaving a remainder of 21.
Put 3 as the next digit of the answer. 
Result so far: 10083.0
The remainder is 21 after subtracting 192 from 213.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Advancing to step 7:
210 divided by 64 is 3 with a remainder of 18.
The number 3 becomes the next digit in our result. 
Result so far: 10083.3
Subtracting 192 from 210 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Advancing to step 8:
If we divide 180 by 64, we get 2 and a remainder of 52.
Record the quotient 2 as the next digit in the result. 
Result so far: 10083.32
Subtracting 128 from 180 leaves us with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Let's proceed to step 9:
64 goes into 520 8 times with a remainder of 8.
The number 8 becomes the next digit in our result. 
Result so far: 10083.328
If we take 512 away from 520, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 10:
80 divided by 64 is 1 with a remainder of 16.
The number 1 becomes the next digit in our result. 
Result so far: 10083.3281
Subtract 64 from 80 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 11:
If we divide 160 by 64, we get 2 and a remainder of 32.
Use 2 as the next digit of our solution. 
Result so far: 10083.32812
If we subtract 128 from 160, 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.

Going ahead to step 12:
When dividing 320 by 64, we get 5 with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 10083.328125
Subtracting 320 from 320 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 13:
If we divide 0 by 64, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 10083.328125
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 14:
The number 64 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 10083.328125
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 10083.328125, with a leftover of 0.0.