762399 divided by 45 
The aim is to understand the frequency of 45 in 762399.

On to step 1:
The number 45 fits into 7 0 times, leaving a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Fetch the next digit (6) from the dividend, attach it to 7 and continue: 76 / 45

Going ahead to step 2:
If we divide 76 by 45, we get 1 and a remainder of 31.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 45 from 76 leaves us with 31.
Take the next digit (2) from the dividend and append it to 31, then repeat: 312 / 45

Advancing to step 3:
45 can be fit into 312 6 times, resulting in a remainder of 42.
Put 6 as the next digit of the answer. 
Result so far: 16.0
If we take 270 away from 312, we end up with 42.
Fetch the next digit (3) from the dividend, attach it to 42 and continue: 423 / 45

Advancing to step 4:
When dividing 423 by 45, we get 9 with a remainder of 18.
The next digit of our result is 9. 
Result so far: 169.0
Deduct 405 from 423 and we're left with 18.
Fetch the next digit (9) from the dividend, attach it to 18 and continue: 189 / 45

Let's proceed to step 5:
When dividing 189 by 45, we get 4 with a remainder of 9.
Put 4 as the next digit of the answer. 
Result so far: 1694.0
Subtracting 180 from 189 leaves us with 9.
Take the next digit (9) from the dividend and append it to 9, then repeat: 99 / 45

Let's proceed to step 6:
When dividing 99 by 45, we get 2 with a remainder of 9.
The number 2 becomes the next digit in our result. 
Result so far: 16942.0
Subtracting 90 from 99 leaves us with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Let's proceed to step 7:
45 can be fit into 90 2 times, resulting in a remainder of 0.
Record the quotient 2 as the next digit in the result. 
Result so far: 16942.2
The remainder is 0 after subtracting 90 from 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 8:
45 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 16942.2
Subtract 0 from 0 to 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.

Advancing to step 9:
When dividing 0 by 45, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 16942.2
Subtract 0 from 0 to 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.

After the division, we end up with 16942.2 and a remainder of 0.0.