Let's divide 939118 by 90
The aim is to understand the frequency of 90 in 939118.

Going ahead to step 1:
When dividing 9 by 90, we get 0 with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Fetch the next digit (3) from the dividend, attach it to 9 and continue: 93 / 90

Step 2:
If we divide 93 by 90, we get 1 and a remainder of 3.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 90 from 93 to get 3.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 90

Advancing to step 3:
If we divide 39 by 90, we get 0 and a remainder of 39.
Use 0 as the next digit of our solution. 
Result so far: 10.0
Subtracting 0 from 39 leaves us with 39.
Take the next digit (1) from the dividend and append it to 39, then repeat: 391 / 90

Advancing to step 4:
The number 90 fits into 391 4 times, leaving a remainder of 31.
Write down 4 as next digit of the result. 
Result so far: 104.0
Subtracting 360 from 391 leaves us with 31.
Append the next digit (1) from the dividend to 31 and continue with: 311 / 90

Moving on to step 5:
311 divided by 90 is 3 with a remainder of 41.
Record the quotient 3 as the next digit in the result. 
Result so far: 1043.0
Deduct 270 from 311 and we're left with 41.
Fetch the next digit (8) from the dividend, attach it to 41 and continue: 418 / 90

Advancing to step 6:
90 can be fit into 418 4 times, resulting in a remainder of 58.
Write down 4 as next digit of the result. 
Result so far: 10434.0
Subtracting 360 from 418 leaves us with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

On to step 7:
90 can be fit into 580 6 times, resulting in a remainder of 40.
The number 6 becomes the next digit in our result. 
Result so far: 10434.6
If we take 540 away from 580, 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.

Advancing to step 8:
90 can be fit into 400 4 times, resulting in a remainder of 40.
The number 4 becomes the next digit in our result. 
Result so far: 10434.64
Deduct 360 from 400 and we're left 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.

Step 9:
When dividing 400 by 90, we get 4 with a remainder of 40.
Use 4 as the next digit of our solution. 
Result so far: 10434.644
Deduct 360 from 400 and we're left 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.

The final outcome is 10434.644, with a leftover of 0.004.