We divide 903990 by 75
The aim is to understand the frequency of 75 in 903990.

Moving on to step 1:
75 can be fit into 9 0 times, resulting in a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Include the next digit (0) from the dividend after 9, then repeat: 90 / 75

On to step 2:
90 divided by 75 is 1 with a remainder of 15.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 75 from 90 and we're left with 15.
Include the next digit (3) from the dividend after 15, then repeat: 153 / 75

Step 3:
75 goes into 153 2 times with a remainder of 3.
The next digit of our result is 2. 
Result so far: 12.0
Subtract 150 from 153 to get 3.
Take the next digit (9) from the dividend and append it to 3, then repeat: 39 / 75

Advancing to step 4:
39 divided by 75 is 0 with a remainder of 39.
The number 0 becomes the next digit in our result. 
Result so far: 120.0
Deduct 0 from 39 and we're left with 39.
Include the next digit (9) from the dividend after 39, then repeat: 399 / 75

Moving on to step 5:
If we divide 399 by 75, we get 5 and a remainder of 24.
Write down 5 as next digit of the result. 
Result so far: 1205.0
If we take 375 away from 399, we end up with 24.
Fetch the next digit (0) from the dividend, attach it to 24 and continue: 240 / 75

Advancing to step 6:
When dividing 240 by 75, we get 3 with a remainder of 15.
Put 3 as the next digit of the answer. 
Result so far: 12053.0
Subtracting 225 from 240 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 7:
75 goes into 150 2 times with a remainder of 0.
Write down 2 as next digit of the result. 
Result so far: 12053.2
Subtracting 150 from 150 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 8:
If we divide 0 by 75, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 12053.2
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 9:
When dividing 0 by 75, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 12053.2
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

In conclusion, the division gives 12053.2 with a balance of 0.0.