We look at the division of 66549795 by 90 
We're looking to find how many times 90 goes into 66549795.

Step 1:
6 divided by 90 is 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Bring next digit (6) of the dividend behind the 6 and repeat the process: 66 / 90

On to step 2:
66 divided by 90 is 0 with a remainder of 66.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 66 leaves us with 66.
Append the next digit (5) from the dividend to 66 and continue with: 665 / 90

On to step 3:
90 goes into 665 7 times with a remainder of 35.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
Deduct 630 from 665 and we're left with 35.
Fetch the next digit (4) from the dividend, attach it to 35 and continue: 354 / 90

Step 4:
When dividing 354 by 90, we get 3 with a remainder of 84.
The number 3 becomes the next digit in our result. 
Result so far: 73.0
The remainder is 84 after subtracting 270 from 354.
Take the next digit (9) from the dividend and append it to 84, then repeat: 849 / 90

Going ahead to step 5:
If we divide 849 by 90, we get 9 and a remainder of 39.
Use 9 as the next digit of our solution. 
Result so far: 739.0
Subtract 810 from 849 to get 39.
Grab the next digit (7) from the dividend, add it to 39, then carry on: 397 / 90

Moving on to step 6:
When dividing 397 by 90, we get 4 with a remainder of 37.
The number 4 becomes the next digit in our result. 
Result so far: 7394.0
Subtracting 360 from 397 leaves us with 37.
Fetch the next digit (9) from the dividend, attach it to 37 and continue: 379 / 90

On to step 7:
90 goes into 379 4 times with a remainder of 19.
The number 4 becomes the next digit in our result. 
Result so far: 73944.0
Subtract 360 from 379 to get 19.
Take the next digit (5) from the dividend and append it to 19, then repeat: 195 / 90

Let's proceed to step 8:
195 divided by 90 is 2 with a remainder of 15.
Use 2 as the next digit of our solution. 
Result so far: 739442.0
Subtract 180 from 195 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 9:
If we divide 150 by 90, we get 1 and a remainder of 60.
Use 1 as the next digit of our solution. 
Result so far: 739442.1
The remainder is 60 after subtracting 90 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Moving on to step 10:
90 goes into 600 6 times with a remainder of 60.
Record the quotient 6 as the next digit in the result. 
Result so far: 739442.16
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.

On to step 11:
If we divide 600 by 90, we get 6 and a remainder of 60.
Write down 6 as next digit of the result. 
Result so far: 739442.166
Deduct 540 from 600 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.

The final outcome is 739442.166, with a leftover of 0.006.