We're dividing 719432 by 45 
The aim is to understand the frequency of 45 in 719432.

On to step 1:
If we divide 7 by 45, we get 0 and a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Take the next digit (1) from the dividend and append it to 7, then repeat: 71 / 45

Step 2:
71 divided by 45 is 1 with a remainder of 26.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 45 from 71 and we're left with 26.
Grab the next digit (9) from the dividend, add it to 26, then carry on: 269 / 45

Let's proceed to step 3:
45 goes into 269 5 times with a remainder of 44.
Record the quotient 5 as the next digit in the result. 
Result so far: 15.0
If we take 225 away from 269, we end up with 44.
Include the next digit (4) from the dividend after 44, then repeat: 444 / 45

Step 4:
When dividing 444 by 45, we get 9 with a remainder of 39.
Record the quotient 9 as the next digit in the result. 
Result so far: 159.0
Subtract 405 from 444 to get 39.
Take the next digit (3) from the dividend and append it to 39, then repeat: 393 / 45

Advancing to step 5:
If we divide 393 by 45, we get 8 and a remainder of 33.
Put 8 as the next digit of the answer. 
Result so far: 1598.0
If we take 360 away from 393, we end up with 33.
Fetch the next digit (2) from the dividend, attach it to 33 and continue: 332 / 45

Advancing to step 6:
When dividing 332 by 45, we get 7 with a remainder of 17.
The next digit of our result is 7. 
Result so far: 15987.0
Deduct 315 from 332 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Step 7:
45 goes into 170 3 times with a remainder of 35.
The number 3 becomes the next digit in our result. 
Result so far: 15987.3
Deduct 135 from 170 and we're left with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Going ahead to step 8:
45 can be fit into 350 7 times, resulting in a remainder of 35.
Record the quotient 7 as the next digit in the result. 
Result so far: 15987.37
Subtract 315 from 350 to get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Let's proceed to step 9:
45 goes into 350 7 times with a remainder of 35.
Put 7 as the next digit of the answer. 
Result so far: 15987.377
The remainder is 35 after subtracting 315 from 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

The quotient of the division is 15987.377, and the remainder is 0.0035.