We divide 947670 by 90
The aim is to understand the frequency of 90 in 947670.

Let's proceed to step 1:
If we divide 9 by 90, we get 0 and a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Fetch the next digit (4) from the dividend, attach it to 9 and continue: 94 / 90

Step 2:
90 goes into 94 1 times with a remainder of 4.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 90 away from 94, we end up with 4.
Grab the next digit (7) from the dividend, add it to 4, then carry on: 47 / 90

Going ahead to step 3:
90 can be fit into 47 0 times, resulting in a remainder of 47.
The next digit of our result is 0. 
Result so far: 10.0
Deduct 0 from 47 and we're left with 47.
Include the next digit (6) from the dividend after 47, then repeat: 476 / 90

Going ahead to step 4:
If we divide 476 by 90, we get 5 and a remainder of 26.
Use 5 as the next digit of our solution. 
Result so far: 105.0
If we take 450 away from 476, we end up with 26.
Fetch the next digit (7) from the dividend, attach it to 26 and continue: 267 / 90

Step 5:
When dividing 267 by 90, we get 2 with a remainder of 87.
The next digit of our result is 2. 
Result so far: 1052.0
Subtracting 180 from 267 leaves us with 87.
Append the next digit (0) from the dividend to 87 and continue with: 870 / 90

Advancing to step 6:
When dividing 870 by 90, we get 9 with a remainder of 60.
Record the quotient 9 as the next digit in the result. 
Result so far: 10529.0
Subtract 810 from 870 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.

Let's proceed to step 7:
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: 10529.6
The remainder is 60 after subtracting 540 from 600.
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 8:
If we divide 600 by 90, we get 6 and a remainder of 60.
The number 6 becomes the next digit in our result. 
Result so far: 10529.66
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.

After the division, we end up with 10529.66 and a remainder of 0.06.