Let's divide 84319747 by 90
The aim is to understand the frequency of 90 in 84319747.

Advancing to step 1:
8 divided by 90 is 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Include the next digit (4) from the dividend after 8, then repeat: 84 / 90

On to step 2:
90 can be fit into 84 0 times, resulting in a remainder of 84.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 84 to get 84.
Fetch the next digit (3) from the dividend, attach it to 84 and continue: 843 / 90

Moving on to step 3:
When dividing 843 by 90, we get 9 with a remainder of 33.
Use 9 as the next digit of our solution. 
Result so far: 9.0
Subtracting 810 from 843 leaves us with 33.
Bring next digit (1) of the dividend behind the 33 and repeat the process: 331 / 90

Moving on to step 4:
If we divide 331 by 90, we get 3 and a remainder of 61.
Put 3 as the next digit of the answer. 
Result so far: 93.0
Subtract 270 from 331 to get 61.
Grab the next digit (9) from the dividend, add it to 61, then carry on: 619 / 90

Moving on to step 5:
619 divided by 90 is 6 with a remainder of 79.
The number 6 becomes the next digit in our result. 
Result so far: 936.0
Subtract 540 from 619 to get 79.
Take the next digit (7) from the dividend and append it to 79, then repeat: 797 / 90

Step 6:
90 goes into 797 8 times with a remainder of 77.
Use 8 as the next digit of our solution. 
Result so far: 9368.0
Subtracting 720 from 797 leaves us with 77.
Include the next digit (4) from the dividend after 77, then repeat: 774 / 90

Step 7:
774 divided by 90 is 8 with a remainder of 54.
The next digit of our result is 8. 
Result so far: 93688.0
The remainder is 54 after subtracting 720 from 774.
Take the next digit (7) from the dividend and append it to 54, then repeat: 547 / 90

Step 8:
90 can be fit into 547 6 times, resulting in a remainder of 7.
Put 6 as the next digit of the answer. 
Result so far: 936886.0
Subtracting 540 from 547 leaves us with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Advancing to step 9:
90 goes into 70 0 times with a remainder of 70.
Put 0 as the next digit of the answer. 
Result so far: 936886.0
The remainder is 70 after subtracting 0 from 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

On to step 10:
When dividing 700 by 90, we get 7 with a remainder of 70.
The next digit of our result is 7. 
Result so far: 936886.07
The remainder is 70 after subtracting 630 from 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Going ahead to step 11:
700 divided by 90 is 7 with a remainder of 70.
The number 7 becomes the next digit in our result. 
Result so far: 936886.077
Deduct 630 from 700 and we're left with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

The final outcome is 936886.077, with a leftover of 0.007.