We divide 543773 by 90
We want to figure out the number of times 543773 can be divided by 90.

On to step 1:
If we divide 5 by 90, we get 0 and a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Take the next digit (4) from the dividend and append it to 5, then repeat: 54 / 90

Advancing to step 2:
The number 90 fits into 54 0 times, leaving a remainder of 54.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 54 to get 54.
Append the next digit (3) from the dividend to 54 and continue with: 543 / 90

Going ahead to step 3:
If we divide 543 by 90, we get 6 and a remainder of 3.
Use 6 as the next digit of our solution. 
Result so far: 6.0
Deduct 540 from 543 and we're left with 3.
Append the next digit (7) from the dividend to 3 and continue with: 37 / 90

Step 4:
The number 90 fits into 37 0 times, leaving a remainder of 37.
Write down 0 as next digit of the result. 
Result so far: 60.0
If we subtract 0 from 37, we get 37.
Take the next digit (7) from the dividend and append it to 37, then repeat: 377 / 90

Step 5:
If we divide 377 by 90, we get 4 and a remainder of 17.
Use 4 as the next digit of our solution. 
Result so far: 604.0
The remainder is 17 after subtracting 360 from 377.
Take the next digit (3) from the dividend and append it to 17, then repeat: 173 / 90

On to step 6:
If we divide 173 by 90, we get 1 and a remainder of 83.
Record the quotient 1 as the next digit in the result. 
Result so far: 6041.0
The remainder is 83 after subtracting 90 from 173.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Step 7:
The number 90 fits into 830 9 times, leaving a remainder of 20.
Put 9 as the next digit of the answer. 
Result so far: 6041.9
The remainder is 20 after subtracting 810 from 830.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 8:
The number 90 fits into 200 2 times, leaving a remainder of 20.
The next digit of our result is 2. 
Result so far: 6041.92
Subtracting 180 from 200 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 9:
90 goes into 200 2 times with a remainder of 20.
Write down 2 as next digit of the result. 
Result so far: 6041.922
Subtract 180 from 200 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Our division results in 6041.922 with a remaining 0.002.