Let's divide 880173 by 90
We want to figure out the number of times 880173 can be divided by 90.

Step 1:
8 divided by 90 is 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Grab the next digit (8) from the dividend, add it to 8, then carry on: 88 / 90

Going ahead to step 2:
When dividing 88 by 90, we get 0 with a remainder of 88.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 88 and we're left with 88.
Append the next digit (0) from the dividend to 88 and continue with: 880 / 90

On to step 3:
90 can be fit into 880 9 times, resulting in a remainder of 70.
Write down 9 as next digit of the result. 
Result so far: 9.0
The remainder is 70 after subtracting 810 from 880.
Bring next digit (1) of the dividend behind the 70 and repeat the process: 701 / 90

Advancing to step 4:
90 can be fit into 701 7 times, resulting in a remainder of 71.
Write down 7 as next digit of the result. 
Result so far: 97.0
If we subtract 630 from 701, we get 71.
Take the next digit (7) from the dividend and append it to 71, then repeat: 717 / 90

Let's proceed to step 5:
717 divided by 90 is 7 with a remainder of 87.
The next digit of our result is 7. 
Result so far: 977.0
The remainder is 87 after subtracting 630 from 717.
Grab the next digit (3) from the dividend, add it to 87, then carry on: 873 / 90

Let's proceed to step 6:
The number 90 fits into 873 9 times, leaving a remainder of 63.
The next digit of our result is 9. 
Result so far: 9779.0
The remainder is 63 after subtracting 810 from 873.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Let's proceed to step 7:
630 divided by 90 is 7 with a remainder of 0.
Put 7 as the next digit of the answer. 
Result so far: 9779.7
If we subtract 630 from 630, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 8:
90 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 9779.7
Subtracting 0 from 0 leaves us 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.

Going ahead to step 9:
90 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 9779.7
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.

After the division, we end up with 9779.7 and a remainder of 0.0.