We're dividing 514758 by 90 
The aim is to understand the frequency of 90 in 514758.

On to step 1:
The number 90 fits into 5 0 times, leaving a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Bring next digit (1) of the dividend behind the 5 and repeat the process: 51 / 90

On to step 2:
51 divided by 90 is 0 with a remainder of 51.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 51 leaves us with 51.
Append the next digit (4) from the dividend to 51 and continue with: 514 / 90

Going ahead to step 3:
If we divide 514 by 90, we get 5 and a remainder of 64.
Write down 5 as next digit of the result. 
Result so far: 5.0
Subtracting 450 from 514 leaves us with 64.
Grab the next digit (7) from the dividend, add it to 64, then carry on: 647 / 90

On to step 4:
The number 90 fits into 647 7 times, leaving a remainder of 17.
The number 7 becomes the next digit in our result. 
Result so far: 57.0
Deduct 630 from 647 and we're left with 17.
Take the next digit (5) from the dividend and append it to 17, then repeat: 175 / 90

Step 5:
When dividing 175 by 90, we get 1 with a remainder of 85.
Use 1 as the next digit of our solution. 
Result so far: 571.0
Subtract 90 from 175 to get 85.
Bring next digit (8) of the dividend behind the 85 and repeat the process: 858 / 90

Step 6:
858 divided by 90 is 9 with a remainder of 48.
The number 9 becomes the next digit in our result. 
Result so far: 5719.0
The remainder is 48 after subtracting 810 from 858.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Moving on to step 7:
90 can be fit into 480 5 times, resulting in a remainder of 30.
Use 5 as the next digit of our solution. 
Result so far: 5719.5
The remainder is 30 after subtracting 450 from 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 8:
90 can be fit into 300 3 times, resulting in a remainder of 30.
Use 3 as the next digit of our solution. 
Result so far: 5719.53
Subtract 270 from 300 to get 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 9:
300 divided by 90 is 3 with a remainder of 30.
Put 3 as the next digit of the answer. 
Result so far: 5719.533
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.

After the division, we end up with 5719.533 and a remainder of 0.003.