Let's divide 873186 by 90
Our goal is to divide 873186 by 90.

Step 1:
If we divide 8 by 90, we get 0 and a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Append the next digit (7) from the dividend to 8 and continue with: 87 / 90

Step 2:
If we divide 87 by 90, we get 0 and a remainder of 87.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 87 after subtracting 0 from 87.
Append the next digit (3) from the dividend to 87 and continue with: 873 / 90

Advancing to step 3:
If we divide 873 by 90, we get 9 and a remainder of 63.
The next digit of our result is 9. 
Result so far: 9.0
If we take 810 away from 873, we end up with 63.
Bring next digit (1) of the dividend behind the 63 and repeat the process: 631 / 90

Advancing to step 4:
When dividing 631 by 90, we get 7 with a remainder of 1.
Write down 7 as next digit of the result. 
Result so far: 97.0
Deduct 630 from 631 and we're left with 1.
Grab the next digit (8) from the dividend, add it to 1, then carry on: 18 / 90

Step 5:
18 divided by 90 is 0 with a remainder of 18.
Use 0 as the next digit of our solution. 
Result so far: 970.0
The remainder is 18 after subtracting 0 from 18.
Bring next digit (6) of the dividend behind the 18 and repeat the process: 186 / 90

Moving on to step 6:
When dividing 186 by 90, we get 2 with a remainder of 6.
Write down 2 as next digit of the result. 
Result so far: 9702.0
Subtract 180 from 186 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 7:
The number 90 fits into 60 0 times, leaving a remainder of 60.
The next digit of our result is 0. 
Result so far: 9702.0
Subtracting 0 from 60 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.

Let's proceed to step 8:
When dividing 600 by 90, we get 6 with a remainder of 60.
Record the quotient 6 as the next digit in the result. 
Result so far: 9702.06
The remainder is 60 after subtracting 540 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Advancing to step 9:
90 goes into 600 6 times with a remainder of 60.
The next digit of our result is 6. 
Result so far: 9702.066
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 9702.066, and the remainder is 0.006.