490173 ÷ 90 
We want to figure out the number of times 490173 can be divided by 90.

Moving on to step 1:
If we divide 4 by 90, we get 0 and a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Bring next digit (9) of the dividend behind the 4 and repeat the process: 49 / 90

Moving on to step 2:
The number 90 fits into 49 0 times, leaving a remainder of 49.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 49 to get 49.
Bring next digit (0) of the dividend behind the 49 and repeat the process: 490 / 90

Let's proceed to step 3:
90 can be fit into 490 5 times, resulting in a remainder of 40.
The next digit of our result is 5. 
Result so far: 5.0
The remainder is 40 after subtracting 450 from 490.
Fetch the next digit (1) from the dividend, attach it to 40 and continue: 401 / 90

Advancing to step 4:
The number 90 fits into 401 4 times, leaving a remainder of 41.
Write down 4 as next digit of the result. 
Result so far: 54.0
If we take 360 away from 401, we end up with 41.
Fetch the next digit (7) from the dividend, attach it to 41 and continue: 417 / 90

Moving on to step 5:
417 divided by 90 is 4 with a remainder of 57.
Record the quotient 4 as the next digit in the result. 
Result so far: 544.0
If we subtract 360 from 417, we get 57.
Include the next digit (3) from the dividend after 57, then repeat: 573 / 90

Step 6:
If we divide 573 by 90, we get 6 and a remainder of 33.
Record the quotient 6 as the next digit in the result. 
Result so far: 5446.0
Subtracting 540 from 573 leaves us with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Going ahead to step 7:
90 goes into 330 3 times with a remainder of 60.
Put 3 as the next digit of the answer. 
Result so far: 5446.3
Deduct 270 from 330 and we're left 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:
90 goes into 600 6 times with a remainder of 60.
Write down 6 as next digit of the result. 
Result so far: 5446.36
If we subtract 540 from 600, we get 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 9:
The number 90 fits into 600 6 times, leaving a remainder of 60.
Write down 6 as next digit of the result. 
Result so far: 5446.366
Subtract 540 from 600 to get 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 final result is 5446.366 with a remainder of 0.006.