We divide 274906 by 90
The aim is to understand the frequency of 90 in 274906.

Let's proceed to step 1:
The number 90 fits into 2 0 times, leaving a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Take the next digit (7) from the dividend and append it to 2, then repeat: 27 / 90

Moving on to step 2:
When dividing 27 by 90, we get 0 with a remainder of 27.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 27, we end up with 27.
Append the next digit (4) from the dividend to 27 and continue with: 274 / 90

On to step 3:
The number 90 fits into 274 3 times, leaving a remainder of 4.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we subtract 270 from 274, we get 4.
Take the next digit (9) from the dividend and append it to 4, then repeat: 49 / 90

On to step 4:
90 can be fit into 49 0 times, resulting in a remainder of 49.
The next digit of our result is 0. 
Result so far: 30.0
Deduct 0 from 49 and we're left with 49.
Bring next digit (0) of the dividend behind the 49 and repeat the process: 490 / 90

Let's proceed to step 5:
If we divide 490 by 90, we get 5 and a remainder of 40.
Put 5 as the next digit of the answer. 
Result so far: 305.0
Subtracting 450 from 490 leaves us with 40.
Append the next digit (6) from the dividend to 40 and continue with: 406 / 90

Let's proceed to step 6:
The number 90 fits into 406 4 times, leaving a remainder of 46.
Use 4 as the next digit of our solution. 
Result so far: 3054.0
Subtracting 360 from 406 leaves us with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Moving on to step 7:
The number 90 fits into 460 5 times, leaving a remainder of 10.
Use 5 as the next digit of our solution. 
Result so far: 3054.5
Deduct 450 from 460 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 8:
When dividing 100 by 90, we get 1 with a remainder of 10.
Write down 1 as next digit of the result. 
Result so far: 3054.51
The remainder is 10 after subtracting 90 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 9:
When dividing 100 by 90, we get 1 with a remainder of 10.
The number 1 becomes the next digit in our result. 
Result so far: 3054.511
If we take 90 away from 100, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The final outcome is 3054.511, with a leftover of 0.001.