We divide 74990 by 45
The aim is to understand the frequency of 45 in 74990.

Going ahead to step 1:
When dividing 7 by 45, we get 0 with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Include the next digit (4) from the dividend after 7, then repeat: 74 / 45

Going ahead to step 2:
45 can be fit into 74 1 times, resulting in a remainder of 29.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 45 from 74 to get 29.
Bring next digit (9) of the dividend behind the 29 and repeat the process: 299 / 45

Going ahead to step 3:
When dividing 299 by 45, we get 6 with a remainder of 29.
The next digit of our result is 6. 
Result so far: 16.0
The remainder is 29 after subtracting 270 from 299.
Include the next digit (9) from the dividend after 29, then repeat: 299 / 45

Let's proceed to step 4:
When dividing 299 by 45, we get 6 with a remainder of 29.
Record the quotient 6 as the next digit in the result. 
Result so far: 166.0
Deduct 270 from 299 and we're left with 29.
Bring next digit (0) of the dividend behind the 29 and repeat the process: 290 / 45

Step 5:
The number 45 fits into 290 6 times, leaving a remainder of 20.
Put 6 as the next digit of the answer. 
Result so far: 1666.0
Subtract 270 from 290 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 6:
If we divide 200 by 45, we get 4 and a remainder of 20.
Use 4 as the next digit of our solution. 
Result so far: 1666.4
Subtract 180 from 200 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 7:
45 can be fit into 200 4 times, resulting in a remainder of 20.
Use 4 as the next digit of our solution. 
Result so far: 1666.44
If we take 180 away from 200, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

After the division, we end up with 1666.44 and a remainder of 0.02.