We're dividing 81760045 by 90 
We want to figure out the number of times 81760045 can be divided by 90.

Step 1:
When dividing 8 by 90, we get 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Append the next digit (1) from the dividend to 8 and continue with: 81 / 90

Let's proceed to step 2:
81 divided by 90 is 0 with a remainder of 81.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 81 and we're left with 81.
Fetch the next digit (7) from the dividend, attach it to 81 and continue: 817 / 90

Advancing to step 3:
The number 90 fits into 817 9 times, leaving a remainder of 7.
Use 9 as the next digit of our solution. 
Result so far: 9.0
If we subtract 810 from 817, we get 7.
Include the next digit (6) from the dividend after 7, then repeat: 76 / 90

Step 4:
76 divided by 90 is 0 with a remainder of 76.
Write down 0 as next digit of the result. 
Result so far: 90.0
Deduct 0 from 76 and we're left with 76.
Bring next digit (0) of the dividend behind the 76 and repeat the process: 760 / 90

Going ahead to step 5:
The number 90 fits into 760 8 times, leaving a remainder of 40.
Use 8 as the next digit of our solution. 
Result so far: 908.0
Deduct 720 from 760 and we're left with 40.
Include the next digit (0) from the dividend after 40, then repeat: 400 / 90

Let's proceed to step 6:
The number 90 fits into 400 4 times, leaving a remainder of 40.
The number 4 becomes the next digit in our result. 
Result so far: 9084.0
Subtract 360 from 400 to get 40.
Append the next digit (4) from the dividend to 40 and continue with: 404 / 90

Step 7:
90 goes into 404 4 times with a remainder of 44.
The number 4 becomes the next digit in our result. 
Result so far: 90844.0
Subtracting 360 from 404 leaves us with 44.
Include the next digit (5) from the dividend after 44, then repeat: 445 / 90

Going ahead to step 8:
90 can be fit into 445 4 times, resulting in a remainder of 85.
Use 4 as the next digit of our solution. 
Result so far: 908444.0
If we subtract 360 from 445, we get 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Step 9:
If we divide 850 by 90, we get 9 and a remainder of 40.
The next digit of our result is 9. 
Result so far: 908444.9
If we take 810 away from 850, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 10:
90 goes into 400 4 times with a remainder of 40.
Use 4 as the next digit of our solution. 
Result so far: 908444.94
Subtracting 360 from 400 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 11:
When dividing 400 by 90, we get 4 with a remainder of 40.
Put 4 as the next digit of the answer. 
Result so far: 908444.944
Subtract 360 from 400 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

In conclusion, the division gives 908444.944 with a balance of 0.004.