645493 ÷ 64 
Our goal is to divide 645493 by 64.

On to step 1:
When dividing 6 by 64, we get 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Append the next digit (4) from the dividend to 6 and continue with: 64 / 64

On to step 2:
64 goes into 64 1 times with a remainder of 0.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 64 from 64 and we're left with 0.
Grab the next digit (5) from the dividend, add it to 0, then carry on: 5 / 64

Moving on to step 3:
If we divide 5 by 64, we get 0 and a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 10.0
If we take 0 away from 5, we end up with 5.
Include the next digit (4) from the dividend after 5, then repeat: 54 / 64

Going ahead to step 4:
The number 64 fits into 54 0 times, leaving a remainder of 54.
The next digit of our result is 0. 
Result so far: 100.0
Subtracting 0 from 54 leaves us with 54.
Append the next digit (9) from the dividend to 54 and continue with: 549 / 64

Step 5:
The number 64 fits into 549 8 times, leaving a remainder of 37.
The number 8 becomes the next digit in our result. 
Result so far: 1008.0
If we take 512 away from 549, we end up with 37.
Bring next digit (3) of the dividend behind the 37 and repeat the process: 373 / 64

Step 6:
373 divided by 64 is 5 with a remainder of 53.
Use 5 as the next digit of our solution. 
Result so far: 10085.0
If we take 320 away from 373, we end up with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Step 7:
64 goes into 530 8 times with a remainder of 18.
Write down 8 as next digit of the result. 
Result so far: 10085.8
Subtracting 512 from 530 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.

Let's proceed to step 8:
64 can be fit into 180 2 times, resulting in a remainder of 52.
Write down 2 as next digit of the result. 
Result so far: 10085.82
If we take 128 away from 180, we end up 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.

Moving on to step 9:
When dividing 520 by 64, we get 8 with a remainder of 8.
Write down 8 as next digit of the result. 
Result so far: 10085.828
The remainder is 8 after subtracting 512 from 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 10:
64 can be fit into 80 1 times, resulting in a remainder of 16.
The next digit of our result is 1. 
Result so far: 10085.8281
If we take 64 away from 80, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 11:
64 goes into 160 2 times with a remainder of 32.
The number 2 becomes the next digit in our result. 
Result so far: 10085.82812
Deduct 128 from 160 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Let's proceed to step 12:
64 can be fit into 320 5 times, resulting in a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 10085.828125
If we subtract 320 from 320, 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 13:
64 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 10085.828125
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.

Going ahead to step 14:
When dividing 0 by 64, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 10085.828125
If we take 0 away from 0, we end up 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.

The quotient of the division is 10085.828125, and the remainder is 0.0.