We're dividing 646530 by 90 
Let's see how many times 90 fits into 646530.

Moving on to step 1:
The number 90 fits into 6 0 times, leaving a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 90

On to step 2:
When dividing 64 by 90, we get 0 with a remainder of 64.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 64, we get 64.
Grab the next digit (6) from the dividend, add it to 64, then carry on: 646 / 90

Advancing to step 3:
90 goes into 646 7 times with a remainder of 16.
Write down 7 as next digit of the result. 
Result so far: 7.0
If we take 630 away from 646, we end up with 16.
Grab the next digit (5) from the dividend, add it to 16, then carry on: 165 / 90

Moving on to step 4:
The number 90 fits into 165 1 times, leaving a remainder of 75.
Record the quotient 1 as the next digit in the result. 
Result so far: 71.0
If we subtract 90 from 165, we get 75.
Append the next digit (3) from the dividend to 75 and continue with: 753 / 90

Advancing to step 5:
90 can be fit into 753 8 times, resulting in a remainder of 33.
Use 8 as the next digit of our solution. 
Result so far: 718.0
If we take 720 away from 753, we end up with 33.
Bring next digit (0) of the dividend behind the 33 and repeat the process: 330 / 90

On to step 6:
When dividing 330 by 90, we get 3 with a remainder of 60.
Use 3 as the next digit of our solution. 
Result so far: 7183.0
Subtracting 270 from 330 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 7:
600 divided by 90 is 6 with a remainder of 60.
Put 6 as the next digit of the answer. 
Result so far: 7183.6
If we take 540 away from 600, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 8:
600 divided by 90 is 6 with a remainder of 60.
Put 6 as the next digit of the answer. 
Result so far: 7183.66
If we take 540 away from 600, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

The quotient of the division is 7183.66, and the remainder is 0.06.