We're dividing 758490 by 45 
The aim is to understand the frequency of 45 in 758490.

Moving on to step 1:
When dividing 7 by 45, we get 0 with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Grab the next digit (5) from the dividend, add it to 7, then carry on: 75 / 45

Going ahead to step 2:
If we divide 75 by 45, we get 1 and a remainder of 30.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 45 from 75, we get 30.
Fetch the next digit (8) from the dividend, attach it to 30 and continue: 308 / 45

Going ahead to step 3:
45 goes into 308 6 times with a remainder of 38.
The next digit of our result is 6. 
Result so far: 16.0
If we take 270 away from 308, we end up with 38.
Bring next digit (4) of the dividend behind the 38 and repeat the process: 384 / 45

Let's proceed to step 4:
The number 45 fits into 384 8 times, leaving a remainder of 24.
Put 8 as the next digit of the answer. 
Result so far: 168.0
If we subtract 360 from 384, we get 24.
Fetch the next digit (9) from the dividend, attach it to 24 and continue: 249 / 45

Step 5:
The number 45 fits into 249 5 times, leaving a remainder of 24.
Use 5 as the next digit of our solution. 
Result so far: 1685.0
Deduct 225 from 249 and we're left with 24.
Fetch the next digit (0) from the dividend, attach it to 24 and continue: 240 / 45

Let's proceed to step 6:
45 goes into 240 5 times with a remainder of 15.
The next digit of our result is 5. 
Result so far: 16855.0
If we take 225 away from 240, we end up 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.

Going ahead to step 7:
The number 45 fits into 150 3 times, leaving a remainder of 15.
Use 3 as the next digit of our solution. 
Result so far: 16855.3
The remainder is 15 after subtracting 135 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 8:
If we divide 150 by 45, we get 3 and a remainder of 15.
Record the quotient 3 as the next digit in the result. 
Result so far: 16855.33
Subtract 135 from 150 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

In conclusion, the division gives 16855.33 with a balance of 0.015.