71526055 ÷ 450 
The aim is to understand the frequency of 450 in 71526055.

Going ahead to step 1:
7 divided by 450 is 0 with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Bring next digit (1) of the dividend behind the 7 and repeat the process: 71 / 450

On to step 2:
The number 450 fits into 71 0 times, leaving a remainder of 71.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 71, we get 71.
Take the next digit (5) from the dividend and append it to 71, then repeat: 715 / 450

Let's proceed to step 3:
715 divided by 450 is 1 with a remainder of 265.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 450 from 715 to get 265.
Grab the next digit (2) from the dividend, add it to 265, then carry on: 2652 / 450

Advancing to step 4:
450 can be fit into 2652 5 times, resulting in a remainder of 402.
The next digit of our result is 5. 
Result so far: 15.0
If we take 2250 away from 2652, we end up with 402.
Include the next digit (6) from the dividend after 402, then repeat: 4026 / 450

Let's proceed to step 5:
4026 divided by 450 is 8 with a remainder of 426.
Write down 8 as next digit of the result. 
Result so far: 158.0
Subtracting 3600 from 4026 leaves us with 426.
Include the next digit (0) from the dividend after 426, then repeat: 4260 / 450

Step 6:
4260 divided by 450 is 9 with a remainder of 210.
The number 9 becomes the next digit in our result. 
Result so far: 1589.0
Subtracting 4050 from 4260 leaves us with 210.
Fetch the next digit (5) from the dividend, attach it to 210 and continue: 2105 / 450

Going ahead to step 7:
450 can be fit into 2105 4 times, resulting in a remainder of 305.
The number 4 becomes the next digit in our result. 
Result so far: 15894.0
Subtracting 1800 from 2105 leaves us with 305.
Fetch the next digit (5) from the dividend, attach it to 305 and continue: 3055 / 450

Let's proceed to step 8:
450 goes into 3055 6 times with a remainder of 355.
Record the quotient 6 as the next digit in the result. 
Result so far: 158946.0
Subtract 2700 from 3055 to get 355.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3550, and continue the process.

Let's proceed to step 9:
The number 450 fits into 3550 7 times, leaving a remainder of 400.
The next digit of our result is 7. 
Result so far: 158946.7
Deduct 3150 from 3550 and we're left with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Let's proceed to step 10:
450 can be fit into 4000 8 times, resulting in a remainder of 400.
Record the quotient 8 as the next digit in the result. 
Result so far: 158946.78
If we take 3600 away from 4000, we end up with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Moving on to step 11:
If we divide 4000 by 450, we get 8 and a remainder of 400.
The number 8 becomes the next digit in our result. 
Result so far: 158946.788
Deduct 3600 from 4000 and we're left with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

The final result is 158946.788 with a remainder of 0.04.