We look at the division of 61217880 by 453 
The aim is to understand the frequency of 453 in 61217880.

Step 1:
When dividing 6 by 453, we get 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Append the next digit (1) from the dividend to 6 and continue with: 61 / 453

Let's proceed to step 2:
61 divided by 453 is 0 with a remainder of 61.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 61 and we're left with 61.
Append the next digit (2) from the dividend to 61 and continue with: 612 / 453

Advancing to step 3:
If we divide 612 by 453, we get 1 and a remainder of 159.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 453 away from 612, we end up with 159.
Include the next digit (1) from the dividend after 159, then repeat: 1591 / 453

Step 4:
The number 453 fits into 1591 3 times, leaving a remainder of 232.
The next digit of our result is 3. 
Result so far: 13.0
Subtracting 1359 from 1591 leaves us with 232.
Take the next digit (7) from the dividend and append it to 232, then repeat: 2327 / 453

Moving on to step 5:
453 can be fit into 2327 5 times, resulting in a remainder of 62.
The number 5 becomes the next digit in our result. 
Result so far: 135.0
Deduct 2265 from 2327 and we're left with 62.
Fetch the next digit (8) from the dividend, attach it to 62 and continue: 628 / 453

On to step 6:
If we divide 628 by 453, we get 1 and a remainder of 175.
The number 1 becomes the next digit in our result. 
Result so far: 1351.0
Subtracting 453 from 628 leaves us with 175.
Fetch the next digit (8) from the dividend, attach it to 175 and continue: 1758 / 453

Advancing to step 7:
1758 divided by 453 is 3 with a remainder of 399.
Put 3 as the next digit of the answer. 
Result so far: 13513.0
Deduct 1359 from 1758 and we're left with 399.
Include the next digit (0) from the dividend after 399, then repeat: 3990 / 453

Let's proceed to step 8:
453 can be fit into 3990 8 times, resulting in a remainder of 366.
Use 8 as the next digit of our solution. 
Result so far: 135138.0
The remainder is 366 after subtracting 3624 from 3990.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3660, and continue the process.

On to step 9:
If we divide 3660 by 453, we get 8 and a remainder of 36.
The number 8 becomes the next digit in our result. 
Result so far: 135138.8
If we subtract 3624 from 3660, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Moving on to step 10:
When dividing 360 by 453, we get 0 with a remainder of 360.
The number 0 becomes the next digit in our result. 
Result so far: 135138.8
Deduct 0 from 360 and we're left with 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Going ahead to step 11:
If we divide 3600 by 453, we get 7 and a remainder of 429.
Use 7 as the next digit of our solution. 
Result so far: 135138.807
Deduct 3171 from 3600 and we're left with 429.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4290, and continue the process.

Moving on to step 12:
The number 453 fits into 4290 9 times, leaving a remainder of 213.
Write down 9 as next digit of the result. 
Result so far: 135138.8079
If we subtract 4077 from 4290, we get 213.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2130, and continue the process.

Step 13:
If we divide 2130 by 453, we get 4 and a remainder of 318.
Use 4 as the next digit of our solution. 
Result so far: 135138.80794
Subtracting 1812 from 2130 leaves us with 318.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3180, and continue the process.

Advancing to step 14:
453 goes into 3180 7 times with a remainder of 9.
Record the quotient 7 as the next digit in the result. 
Result so far: 135138.807947
Subtract 3171 from 3180 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 15:
90 divided by 453 is 0 with a remainder of 90.
Put 0 as the next digit of the answer. 
Result so far: 135138.807947
Deduct 0 from 90 and we're left with 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

On to step 16:
When dividing 900 by 453, we get 1 with a remainder of 447.
Record the quotient 1 as the next digit in the result. 
Result so far: 135138.80794701
If we take 453 away from 900, we end up with 447.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4470, and continue the process.

In conclusion, the division gives 135138.80794701 with a balance of 4.47e-07.