640290 ÷ 84 
We want to divide 640290 by 84.

Let's proceed to step 1:
84 goes into 6 0 times with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Take the next digit (4) from the dividend and append it to 6, then repeat: 64 / 84

Let's proceed to step 2:
64 divided by 84 is 0 with a remainder of 64.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 64 to get 64.
Append the next digit (0) from the dividend to 64 and continue with: 640 / 84

Moving on to step 3:
When dividing 640 by 84, we get 7 with a remainder of 52.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
The remainder is 52 after subtracting 588 from 640.
Bring next digit (2) of the dividend behind the 52 and repeat the process: 522 / 84

Going ahead to step 4:
The number 84 fits into 522 6 times, leaving a remainder of 18.
Write down 6 as next digit of the result. 
Result so far: 76.0
If we subtract 504 from 522, we get 18.
Include the next digit (9) from the dividend after 18, then repeat: 189 / 84

Going ahead to step 5:
The number 84 fits into 189 2 times, leaving a remainder of 21.
The next digit of our result is 2. 
Result so far: 762.0
If we subtract 168 from 189, we get 21.
Take the next digit (0) from the dividend and append it to 21, then repeat: 210 / 84

Advancing to step 6:
84 goes into 210 2 times with a remainder of 42.
Use 2 as the next digit of our solution. 
Result so far: 7622.0
The remainder is 42 after subtracting 168 from 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

On to step 7:
If we divide 420 by 84, we get 5 and a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 7622.5
If we take 420 away from 420, 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.

On to step 8:
If we divide 0 by 84, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 7622.5
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.

On to step 9:
The number 84 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 7622.5
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.

Our division results in 7622.5 with a remaining 0.0.