We look at the division of 87333821 by 453 
The aim is to understand the frequency of 453 in 87333821.

On to step 1:
453 can be fit into 8 0 times, resulting in a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Append the next digit (7) from the dividend to 8 and continue with: 87 / 453

Step 2:
When dividing 87 by 453, we get 0 with a remainder of 87.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 87 leaves us with 87.
Take the next digit (3) from the dividend and append it to 87, then repeat: 873 / 453

Going ahead to step 3:
The number 453 fits into 873 1 times, leaving a remainder of 420.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 453 from 873, we get 420.
Take the next digit (3) from the dividend and append it to 420, then repeat: 4203 / 453

Step 4:
453 can be fit into 4203 9 times, resulting in a remainder of 126.
Use 9 as the next digit of our solution. 
Result so far: 19.0
Deduct 4077 from 4203 and we're left with 126.
Append the next digit (3) from the dividend to 126 and continue with: 1263 / 453

Moving on to step 5:
The number 453 fits into 1263 2 times, leaving a remainder of 357.
Use 2 as the next digit of our solution. 
Result so far: 192.0
If we take 906 away from 1263, we end up with 357.
Bring next digit (8) of the dividend behind the 357 and repeat the process: 3578 / 453

Step 6:
453 can be fit into 3578 7 times, resulting in a remainder of 407.
Write down 7 as next digit of the result. 
Result so far: 1927.0
If we take 3171 away from 3578, we end up with 407.
Bring next digit (2) of the dividend behind the 407 and repeat the process: 4072 / 453

Advancing to step 7:
4072 divided by 453 is 8 with a remainder of 448.
Record the quotient 8 as the next digit in the result. 
Result so far: 19278.0
Deduct 3624 from 4072 and we're left with 448.
Take the next digit (1) from the dividend and append it to 448, then repeat: 4481 / 453

Moving on to step 8:
The number 453 fits into 4481 9 times, leaving a remainder of 404.
Write down 9 as next digit of the result. 
Result so far: 192789.0
If we take 4077 away from 4481, we end up with 404.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4040, and continue the process.

Going ahead to step 9:
The number 453 fits into 4040 8 times, leaving a remainder of 416.
The number 8 becomes the next digit in our result. 
Result so far: 192789.8
Subtracting 3624 from 4040 leaves us with 416.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4160, and continue the process.

Advancing to step 10:
453 can be fit into 4160 9 times, resulting in a remainder of 83.
Use 9 as the next digit of our solution. 
Result so far: 192789.89
The remainder is 83 after subtracting 4077 from 4160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Going ahead to step 11:
830 divided by 453 is 1 with a remainder of 377.
The number 1 becomes the next digit in our result. 
Result so far: 192789.891
The remainder is 377 after subtracting 453 from 830.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3770, and continue the process.

Let's proceed to step 12:
3770 divided by 453 is 8 with a remainder of 146.
Put 8 as the next digit of the answer. 
Result so far: 192789.8918
If we take 3624 away from 3770, we end up with 146.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1460, and continue the process.

Advancing to step 13:
453 can be fit into 1460 3 times, resulting in a remainder of 101.
Put 3 as the next digit of the answer. 
Result so far: 192789.89183
If we subtract 1359 from 1460, we get 101.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1010, and continue the process.

Step 14:
1010 divided by 453 is 2 with a remainder of 104.
Write down 2 as next digit of the result. 
Result so far: 192789.891832
If we take 906 away from 1010, we end up with 104.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1040, and continue the process.

Let's proceed to step 15:
When dividing 1040 by 453, we get 2 with a remainder of 134.
Write down 2 as next digit of the result. 
Result so far: 192789.8918322
The remainder is 134 after subtracting 906 from 1040.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1340, and continue the process.

After the division, we end up with 192789.8918322 and a remainder of 1.34e-06.