We look at the division of 20280053 by 450 
The aim is to understand the frequency of 450 in 20280053.

Advancing to step 1:
The number 450 fits into 2 0 times, leaving a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Append the next digit (0) from the dividend to 2 and continue with: 20 / 450

Going ahead to step 2:
If we divide 20 by 450, we get 0 and a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 20 and we're left with 20.
Bring next digit (2) of the dividend behind the 20 and repeat the process: 202 / 450

Moving on to step 3:
When dividing 202 by 450, we get 0 with a remainder of 202.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 202 to get 202.
Bring next digit (8) of the dividend behind the 202 and repeat the process: 2028 / 450

Step 4:
When dividing 2028 by 450, we get 4 with a remainder of 228.
Write down 4 as next digit of the result. 
Result so far: 4.0
Deduct 1800 from 2028 and we're left with 228.
Append the next digit (0) from the dividend to 228 and continue with: 2280 / 450

Going ahead to step 5:
When dividing 2280 by 450, we get 5 with a remainder of 30.
The number 5 becomes the next digit in our result. 
Result so far: 45.0
Subtract 2250 from 2280 to get 30.
Fetch the next digit (0) from the dividend, attach it to 30 and continue: 300 / 450

Let's proceed to step 6:
300 divided by 450 is 0 with a remainder of 300.
Write down 0 as next digit of the result. 
Result so far: 450.0
If we take 0 away from 300, we end up with 300.
Append the next digit (5) from the dividend to 300 and continue with: 3005 / 450

On to step 7:
When dividing 3005 by 450, we get 6 with a remainder of 305.
Use 6 as the next digit of our solution. 
Result so far: 4506.0
Deduct 2700 from 3005 and we're left with 305.
Append the next digit (3) from the dividend to 305 and continue with: 3053 / 450

Advancing to step 8:
450 can be fit into 3053 6 times, resulting in a remainder of 353.
The next digit of our result is 6. 
Result so far: 45066.0
Subtract 2700 from 3053 to get 353.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3530, and continue the process.

Let's proceed to step 9:
450 goes into 3530 7 times with a remainder of 380.
Use 7 as the next digit of our solution. 
Result so far: 45066.7
If we subtract 3150 from 3530, we get 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

On to step 10:
When dividing 3800 by 450, we get 8 with a remainder of 200.
Record the quotient 8 as the next digit in the result. 
Result so far: 45066.78
If we subtract 3600 from 3800, we get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Going ahead to step 11:
450 can be fit into 2000 4 times, resulting in a remainder of 200.
Record the quotient 4 as the next digit in the result. 
Result so far: 45066.784
Subtracting 1800 from 2000 leaves us with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

On to step 12:
450 goes into 2000 4 times with a remainder of 200.
Write down 4 as next digit of the result. 
Result so far: 45066.7844
Deduct 1800 from 2000 and we're left with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

The quotient of the division is 45066.7844, and the remainder is 0.002.