640590 ÷ 75 
We want to divide 640590 by 75.

Let's proceed to step 1:
6 divided by 75 is 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Take the next digit (4) from the dividend and append it to 6, then repeat: 64 / 75

Step 2:
If we divide 64 by 75, we get 0 and a remainder of 64.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 64 after subtracting 0 from 64.
Include the next digit (0) from the dividend after 64, then repeat: 640 / 75

Step 3:
75 goes into 640 8 times with a remainder of 40.
Use 8 as the next digit of our solution. 
Result so far: 8.0
If we take 600 away from 640, we end up with 40.
Take the next digit (5) from the dividend and append it to 40, then repeat: 405 / 75

Step 4:
If we divide 405 by 75, we get 5 and a remainder of 30.
Write down 5 as next digit of the result. 
Result so far: 85.0
Subtracting 375 from 405 leaves us with 30.
Bring next digit (9) of the dividend behind the 30 and repeat the process: 309 / 75

On to step 5:
75 goes into 309 4 times with a remainder of 9.
Use 4 as the next digit of our solution. 
Result so far: 854.0
Deduct 300 from 309 and we're left with 9.
Fetch the next digit (0) from the dividend, attach it to 9 and continue: 90 / 75

Let's proceed to step 6:
If we divide 90 by 75, we get 1 and a remainder of 15.
Use 1 as the next digit of our solution. 
Result so far: 8541.0
The remainder is 15 after subtracting 75 from 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 7:
150 divided by 75 is 2 with a remainder of 0.
Write down 2 as next digit of the result. 
Result so far: 8541.2
The remainder is 0 after subtracting 150 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 8:
75 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 8541.2
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.

Advancing to step 9:
The number 75 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 8541.2
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 8541.2, and the remainder is 0.0.