We look at the division of 45251451 by 647 
The aim is to understand the frequency of 647 in 45251451.

On to step 1:
4 divided by 647 is 0 with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Include the next digit (5) from the dividend after 4, then repeat: 45 / 647

Step 2:
647 goes into 45 0 times with a remainder of 45.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 45 to get 45.
Grab the next digit (2) from the dividend, add it to 45, then carry on: 452 / 647

Let's proceed to step 3:
If we divide 452 by 647, we get 0 and a remainder of 452.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 452 to get 452.
Take the next digit (5) from the dividend and append it to 452, then repeat: 4525 / 647

Advancing to step 4:
When dividing 4525 by 647, we get 6 with a remainder of 643.
The next digit of our result is 6. 
Result so far: 6.0
The remainder is 643 after subtracting 3882 from 4525.
Grab the next digit (1) from the dividend, add it to 643, then carry on: 6431 / 647

Going ahead to step 5:
If we divide 6431 by 647, we get 9 and a remainder of 608.
The next digit of our result is 9. 
Result so far: 69.0
If we subtract 5823 from 6431, we get 608.
Include the next digit (4) from the dividend after 608, then repeat: 6084 / 647

Step 6:
The number 647 fits into 6084 9 times, leaving a remainder of 261.
Use 9 as the next digit of our solution. 
Result so far: 699.0
If we take 5823 away from 6084, we end up with 261.
Fetch the next digit (5) from the dividend, attach it to 261 and continue: 2615 / 647

Step 7:
647 goes into 2615 4 times with a remainder of 27.
Put 4 as the next digit of the answer. 
Result so far: 6994.0
Subtracting 2588 from 2615 leaves us with 27.
Include the next digit (1) from the dividend after 27, then repeat: 271 / 647

Step 8:
271 divided by 647 is 0 with a remainder of 271.
Write down 0 as next digit of the result. 
Result so far: 69940.0
If we take 0 away from 271, we end up with 271.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2710, and continue the process.

Let's proceed to step 9:
647 goes into 2710 4 times with a remainder of 122.
Record the quotient 4 as the next digit in the result. 
Result so far: 69940.4
Subtract 2588 from 2710 to get 122.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1220, and continue the process.

Advancing to step 10:
If we divide 1220 by 647, we get 1 and a remainder of 573.
Write down 1 as next digit of the result. 
Result so far: 69940.41
Deduct 647 from 1220 and we're left with 573.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5730, and continue the process.

On to step 11:
647 goes into 5730 8 times with a remainder of 554.
The next digit of our result is 8. 
Result so far: 69940.418
Subtract 5176 from 5730 to get 554.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5540, and continue the process.

Let's proceed to step 12:
If we divide 5540 by 647, we get 8 and a remainder of 364.
Record the quotient 8 as the next digit in the result. 
Result so far: 69940.4188
Subtract 5176 from 5540 to get 364.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3640, and continue the process.

The final outcome is 69940.4188, with a leftover of 0.00364.