We look at the division of 761772 by 90 
The aim is to understand the frequency of 90 in 761772.

Moving on to step 1:
90 goes into 7 0 times with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Include the next digit (6) from the dividend after 7, then repeat: 76 / 90

Advancing to step 2:
When dividing 76 by 90, we get 0 with a remainder of 76.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 76 leaves us with 76.
Include the next digit (1) from the dividend after 76, then repeat: 761 / 90

Going ahead to step 3:
761 divided by 90 is 8 with a remainder of 41.
The next digit of our result is 8. 
Result so far: 8.0
If we take 720 away from 761, we end up with 41.
Fetch the next digit (7) from the dividend, attach it to 41 and continue: 417 / 90

Moving on to step 4:
When dividing 417 by 90, we get 4 with a remainder of 57.
Record the quotient 4 as the next digit in the result. 
Result so far: 84.0
Deduct 360 from 417 and we're left with 57.
Bring next digit (7) of the dividend behind the 57 and repeat the process: 577 / 90

Advancing to step 5:
577 divided by 90 is 6 with a remainder of 37.
Write down 6 as next digit of the result. 
Result so far: 846.0
Subtracting 540 from 577 leaves us with 37.
Take the next digit (2) from the dividend and append it to 37, then repeat: 372 / 90

Step 6:
372 divided by 90 is 4 with a remainder of 12.
Use 4 as the next digit of our solution. 
Result so far: 8464.0
If we take 360 away from 372, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 7:
90 goes into 120 1 times with a remainder of 30.
Put 1 as the next digit of the answer. 
Result so far: 8464.1
Deduct 90 from 120 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 8:
If we divide 300 by 90, we get 3 and a remainder of 30.
Use 3 as the next digit of our solution. 
Result so far: 8464.13
If we take 270 away from 300, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 9:
300 divided by 90 is 3 with a remainder of 30.
Write down 3 as next digit of the result. 
Result so far: 8464.133
Deduct 270 from 300 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

In conclusion, the division gives 8464.133 with a balance of 0.003.