We divide 660661 by 90
Let's see how many times 90 fits into 660661.

Step 1:
90 goes into 6 0 times with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Include the next digit (6) from the dividend after 6, then repeat: 66 / 90

Let's proceed to step 2:
If we divide 66 by 90, we get 0 and a remainder of 66.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 66 leaves us with 66.
Append the next digit (0) from the dividend to 66 and continue with: 660 / 90

On to step 3:
When dividing 660 by 90, we get 7 with a remainder of 30.
The next digit of our result is 7. 
Result so far: 7.0
If we subtract 630 from 660, we get 30.
Fetch the next digit (6) from the dividend, attach it to 30 and continue: 306 / 90

Going ahead to step 4:
The number 90 fits into 306 3 times, leaving a remainder of 36.
Put 3 as the next digit of the answer. 
Result so far: 73.0
The remainder is 36 after subtracting 270 from 306.
Fetch the next digit (6) from the dividend, attach it to 36 and continue: 366 / 90

Advancing to step 5:
If we divide 366 by 90, we get 4 and a remainder of 6.
The number 4 becomes the next digit in our result. 
Result so far: 734.0
The remainder is 6 after subtracting 360 from 366.
Include the next digit (1) from the dividend after 6, then repeat: 61 / 90

On to step 6:
90 goes into 61 0 times with a remainder of 61.
The number 0 becomes the next digit in our result. 
Result so far: 7340.0
Deduct 0 from 61 and we're left with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Moving on to step 7:
When dividing 610 by 90, we get 6 with a remainder of 70.
Record the quotient 6 as the next digit in the result. 
Result so far: 7340.6
Subtract 540 from 610 to get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Let's proceed to step 8:
When dividing 700 by 90, we get 7 with a remainder of 70.
The number 7 becomes the next digit in our result. 
Result so far: 7340.67
If we take 630 away from 700, we end up with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

On to step 9:
The number 90 fits into 700 7 times, leaving a remainder of 70.
Record the quotient 7 as the next digit in the result. 
Result so far: 7340.677
The remainder is 70 after subtracting 630 from 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

The quotient of the division is 7340.677, and the remainder is 0.007.