We're dividing 521189 by 90 
Our goal is to divide 521189 by 90.

On to step 1:
90 can be fit into 5 0 times, resulting in a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Append the next digit (2) from the dividend to 5 and continue with: 52 / 90

Step 2:
When dividing 52 by 90, we get 0 with a remainder of 52.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 52 after subtracting 0 from 52.
Include the next digit (1) from the dividend after 52, then repeat: 521 / 90

Going ahead to step 3:
When dividing 521 by 90, we get 5 with a remainder of 71.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
If we take 450 away from 521, we end up with 71.
Take the next digit (1) from the dividend and append it to 71, then repeat: 711 / 90

Moving on to step 4:
90 goes into 711 7 times with a remainder of 81.
Write down 7 as next digit of the result. 
Result so far: 57.0
Subtract 630 from 711 to get 81.
Include the next digit (8) from the dividend after 81, then repeat: 818 / 90

Going ahead to step 5:
The number 90 fits into 818 9 times, leaving a remainder of 8.
Put 9 as the next digit of the answer. 
Result so far: 579.0
Subtract 810 from 818 to get 8.
Include the next digit (9) from the dividend after 8, then repeat: 89 / 90

Advancing to step 6:
90 can be fit into 89 0 times, resulting in a remainder of 89.
The number 0 becomes the next digit in our result. 
Result so far: 5790.0
The remainder is 89 after subtracting 0 from 89.
Since there are no more digits in the dividend, we add a zero to the remainder making it 890, and continue the process.

Moving on to step 7:
90 goes into 890 9 times with a remainder of 80.
Write down 9 as next digit of the result. 
Result so far: 5790.9
Deduct 810 from 890 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Let's proceed to step 8:
90 can be fit into 800 8 times, resulting in a remainder of 80.
Write down 8 as next digit of the result. 
Result so far: 5790.98
If we take 720 away from 800, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Going ahead to step 9:
When dividing 800 by 90, we get 8 with a remainder of 80.
The number 8 becomes the next digit in our result. 
Result so far: 5790.988
If we subtract 720 from 800, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

The quotient of the division is 5790.988, and the remainder is 0.008.