We look at the division of 19379 by 45 
The aim is to understand the frequency of 45 in 19379.

Going ahead to step 1:
If we divide 1 by 45, we get 0 and a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Bring next digit (9) of the dividend behind the 1 and repeat the process: 19 / 45

Advancing to step 2:
19 divided by 45 is 0 with a remainder of 19.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 19 and we're left with 19.
Take the next digit (3) from the dividend and append it to 19, then repeat: 193 / 45

Advancing to step 3:
193 divided by 45 is 4 with a remainder of 13.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Deduct 180 from 193 and we're left with 13.
Fetch the next digit (7) from the dividend, attach it to 13 and continue: 137 / 45

Let's proceed to step 4:
137 divided by 45 is 3 with a remainder of 2.
Record the quotient 3 as the next digit in the result. 
Result so far: 43.0
Subtracting 135 from 137 leaves us with 2.
Fetch the next digit (9) from the dividend, attach it to 2 and continue: 29 / 45

On to step 5:
When dividing 29 by 45, we get 0 with a remainder of 29.
Write down 0 as next digit of the result. 
Result so far: 430.0
If we take 0 away from 29, we end up with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Going ahead to step 6:
The number 45 fits into 290 6 times, leaving a remainder of 20.
The number 6 becomes the next digit in our result. 
Result so far: 430.6
If we take 270 away from 290, 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.

Let's proceed to step 7:
When dividing 200 by 45, we get 4 with a remainder of 20.
Use 4 as the next digit of our solution. 
Result so far: 430.64
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.

Advancing to step 8:
200 divided by 45 is 4 with a remainder of 20.
The number 4 becomes the next digit in our result. 
Result so far: 430.644
The remainder is 20 after subtracting 180 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

The final result is 430.644 with a remainder of 0.002.