50407 ÷ 45 
The aim is to understand the frequency of 45 in 50407.

Advancing to step 1:
5 divided by 45 is 0 with a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Fetch the next digit (0) from the dividend, attach it to 5 and continue: 50 / 45

Step 2:
45 can be fit into 50 1 times, resulting in a remainder of 5.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 5 after subtracting 45 from 50.
Take the next digit (4) from the dividend and append it to 5, then repeat: 54 / 45

Step 3:
If we divide 54 by 45, we get 1 and a remainder of 9.
Write down 1 as next digit of the result. 
Result so far: 11.0
The remainder is 9 after subtracting 45 from 54.
Append the next digit (0) from the dividend to 9 and continue with: 90 / 45

Moving on to step 4:
The number 45 fits into 90 2 times, leaving a remainder of 0.
Record the quotient 2 as the next digit in the result. 
Result so far: 112.0
If we take 90 away from 90, we end up with 0.
Include the next digit (7) from the dividend after 0, then repeat: 7 / 45

Let's proceed to step 5:
45 goes into 7 0 times with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 1120.0
Subtracting 0 from 7 leaves us with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Step 6:
45 goes into 70 1 times with a remainder of 25.
Record the quotient 1 as the next digit in the result. 
Result so far: 1120.1
Subtract 45 from 70 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Let's proceed to step 7:
45 goes into 250 5 times with a remainder of 25.
Put 5 as the next digit of the answer. 
Result so far: 1120.15
Subtracting 225 from 250 leaves us with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Moving on to step 8:
45 can be fit into 250 5 times, resulting in a remainder of 25.
Record the quotient 5 as the next digit in the result. 
Result so far: 1120.155
Subtract 225 from 250 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

After the division, we end up with 1120.155 and a remainder of 0.0025.