We look at the division of 877489 by 90 
Let's see how many times 90 fits into 877489.

Let's proceed to step 1:
The number 90 fits into 8 0 times, leaving a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Take the next digit (7) from the dividend and append it to 8, then repeat: 87 / 90

Going ahead to step 2:
87 divided by 90 is 0 with a remainder of 87.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 87, we get 87.
Append the next digit (7) from the dividend to 87 and continue with: 877 / 90

On to step 3:
90 can be fit into 877 9 times, resulting in a remainder of 67.
The next digit of our result is 9. 
Result so far: 9.0
If we take 810 away from 877, we end up with 67.
Include the next digit (4) from the dividend after 67, then repeat: 674 / 90

On to step 4:
If we divide 674 by 90, we get 7 and a remainder of 44.
The number 7 becomes the next digit in our result. 
Result so far: 97.0
Subtract 630 from 674 to get 44.
Fetch the next digit (8) from the dividend, attach it to 44 and continue: 448 / 90

On to step 5:
The number 90 fits into 448 4 times, leaving a remainder of 88.
Write down 4 as next digit of the result. 
Result so far: 974.0
If we take 360 away from 448, we end up with 88.
Fetch the next digit (9) from the dividend, attach it to 88 and continue: 889 / 90

Advancing to step 6:
90 goes into 889 9 times with a remainder of 79.
Write down 9 as next digit of the result. 
Result so far: 9749.0
Deduct 810 from 889 and we're left with 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Advancing to step 7:
90 goes into 790 8 times with a remainder of 70.
The next digit of our result is 8. 
Result so far: 9749.8
The remainder is 70 after subtracting 720 from 790.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Going ahead to step 8:
When dividing 700 by 90, we get 7 with a remainder of 70.
The next digit of our result is 7. 
Result so far: 9749.87
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.

Moving on to step 9:
700 divided by 90 is 7 with a remainder of 70.
Record the quotient 7 as the next digit in the result. 
Result so far: 9749.877
If we subtract 630 from 700, we 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.

The quotient of the division is 9749.877, and the remainder is 0.007.