We're dividing 531973 by 90 
Let's see how many times 90 fits into 531973.

Step 1:
90 goes into 5 0 times with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Grab the next digit (3) from the dividend, add it to 5, then carry on: 53 / 90

Step 2:
If we divide 53 by 90, we get 0 and a remainder of 53.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 53 after subtracting 0 from 53.
Append the next digit (1) from the dividend to 53 and continue with: 531 / 90

Moving on to step 3:
When dividing 531 by 90, we get 5 with a remainder of 81.
Use 5 as the next digit of our solution. 
Result so far: 5.0
Subtract 450 from 531 to get 81.
Grab the next digit (9) from the dividend, add it to 81, then carry on: 819 / 90

Step 4:
90 goes into 819 9 times with a remainder of 9.
Use 9 as the next digit of our solution. 
Result so far: 59.0
If we take 810 away from 819, we end up with 9.
Take the next digit (7) from the dividend and append it to 9, then repeat: 97 / 90

Moving on to step 5:
When dividing 97 by 90, we get 1 with a remainder of 7.
Write down 1 as next digit of the result. 
Result so far: 591.0
If we take 90 away from 97, we end up with 7.
Bring next digit (3) of the dividend behind the 7 and repeat the process: 73 / 90

On to step 6:
90 goes into 73 0 times with a remainder of 73.
Use 0 as the next digit of our solution. 
Result so far: 5910.0
If we take 0 away from 73, we end up with 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Going ahead to step 7:
90 can be fit into 730 8 times, resulting in a remainder of 10.
The number 8 becomes the next digit in our result. 
Result so far: 5910.8
If we take 720 away from 730, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 8:
100 divided by 90 is 1 with a remainder of 10.
Use 1 as the next digit of our solution. 
Result so far: 5910.81
Subtracting 90 from 100 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 9:
The number 90 fits into 100 1 times, leaving a remainder of 10.
The next digit of our result is 1. 
Result so far: 5910.811
Subtracting 90 from 100 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The final result is 5910.811 with a remainder of 0.001.