We divide 551485 by 90
We want to divide 551485 by 90.

Going ahead to step 1:
If we divide 5 by 90, we get 0 and a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Fetch the next digit (5) from the dividend, attach it to 5 and continue: 55 / 90

Step 2:
90 can be fit into 55 0 times, resulting in a remainder of 55.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 55, we get 55.
Take the next digit (1) from the dividend and append it to 55, then repeat: 551 / 90

Step 3:
If we divide 551 by 90, we get 6 and a remainder of 11.
The next digit of our result is 6. 
Result so far: 6.0
Subtracting 540 from 551 leaves us with 11.
Take the next digit (4) from the dividend and append it to 11, then repeat: 114 / 90

Step 4:
If we divide 114 by 90, we get 1 and a remainder of 24.
The next digit of our result is 1. 
Result so far: 61.0
Subtracting 90 from 114 leaves us with 24.
Take the next digit (8) from the dividend and append it to 24, then repeat: 248 / 90

Step 5:
90 goes into 248 2 times with a remainder of 68.
Record the quotient 2 as the next digit in the result. 
Result so far: 612.0
If we take 180 away from 248, we end up with 68.
Grab the next digit (5) from the dividend, add it to 68, then carry on: 685 / 90

Going ahead to step 6:
If we divide 685 by 90, we get 7 and a remainder of 55.
The next digit of our result is 7. 
Result so far: 6127.0
Deduct 630 from 685 and we're left with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Advancing to step 7:
The number 90 fits into 550 6 times, leaving a remainder of 10.
Record the quotient 6 as the next digit in the result. 
Result so far: 6127.6
Deduct 540 from 550 and we're left 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.

Let's proceed 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: 6127.61
Subtract 90 from 100 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 9:
The number 90 fits into 100 1 times, leaving a remainder of 10.
Use 1 as the next digit of our solution. 
Result so far: 6127.611
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 outcome is 6127.611, with a leftover of 0.001.