We divide 644288 by 75
We want to divide 644288 by 75.

Going ahead to step 1:
The number 75 fits into 6 0 times, leaving a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Fetch the next digit (4) from the dividend, attach it to 6 and continue: 64 / 75

On to step 2:
If we divide 64 by 75, we get 0 and a remainder of 64.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 64, we get 64.
Include the next digit (4) from the dividend after 64, then repeat: 644 / 75

Step 3:
75 goes into 644 8 times with a remainder of 44.
Write down 8 as next digit of the result. 
Result so far: 8.0
Deduct 600 from 644 and we're left with 44.
Append the next digit (2) from the dividend to 44 and continue with: 442 / 75

Advancing to step 4:
75 goes into 442 5 times with a remainder of 67.
Write down 5 as next digit of the result. 
Result so far: 85.0
If we take 375 away from 442, we end up with 67.
Fetch the next digit (8) from the dividend, attach it to 67 and continue: 678 / 75

On to step 5:
The number 75 fits into 678 9 times, leaving a remainder of 3.
Write down 9 as next digit of the result. 
Result so far: 859.0
Deduct 675 from 678 and we're left with 3.
Bring next digit (8) of the dividend behind the 3 and repeat the process: 38 / 75

Step 6:
75 goes into 38 0 times with a remainder of 38.
Put 0 as the next digit of the answer. 
Result so far: 8590.0
Deduct 0 from 38 and we're left with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Moving on to step 7:
The number 75 fits into 380 5 times, leaving a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 8590.5
Deduct 375 from 380 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 8:
75 can be fit into 50 0 times, resulting in a remainder of 50.
Write down 0 as next digit of the result. 
Result so far: 8590.5
If we take 0 away from 50, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 9:
The number 75 fits into 500 6 times, leaving a remainder of 50.
Use 6 as the next digit of our solution. 
Result so far: 8590.506
Subtract 450 from 500 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 10:
75 goes into 500 6 times with a remainder of 50.
Record the quotient 6 as the next digit in the result. 
Result so far: 8590.5066
If we take 450 away from 500, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

The final result is 8590.5066 with a remainder of 0.0005.