We're dividing 20519358 by 647 
The aim is to understand the frequency of 647 in 20519358.

Advancing to step 1:
647 goes into 2 0 times with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Bring next digit (0) of the dividend behind the 2 and repeat the process: 20 / 647

Moving on to step 2:
20 divided by 647 is 0 with a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 20 to get 20.
Fetch the next digit (5) from the dividend, attach it to 20 and continue: 205 / 647

Moving on to step 3:
205 divided by 647 is 0 with a remainder of 205.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 205 leaves us with 205.
Bring next digit (1) of the dividend behind the 205 and repeat the process: 2051 / 647

Advancing to step 4:
When dividing 2051 by 647, we get 3 with a remainder of 110.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
If we take 1941 away from 2051, we end up with 110.
Bring next digit (9) of the dividend behind the 110 and repeat the process: 1109 / 647

Step 5:
1109 divided by 647 is 1 with a remainder of 462.
Write down 1 as next digit of the result. 
Result so far: 31.0
Subtracting 647 from 1109 leaves us with 462.
Fetch the next digit (3) from the dividend, attach it to 462 and continue: 4623 / 647

Let's proceed to step 6:
647 can be fit into 4623 7 times, resulting in a remainder of 94.
Write down 7 as next digit of the result. 
Result so far: 317.0
If we take 4529 away from 4623, we end up with 94.
Take the next digit (5) from the dividend and append it to 94, then repeat: 945 / 647

Let's proceed to step 7:
647 can be fit into 945 1 times, resulting in a remainder of 298.
The number 1 becomes the next digit in our result. 
Result so far: 3171.0
If we subtract 647 from 945, we get 298.
Include the next digit (8) from the dividend after 298, then repeat: 2988 / 647

Advancing to step 8:
When dividing 2988 by 647, we get 4 with a remainder of 400.
Use 4 as the next digit of our solution. 
Result so far: 31714.0
Subtracting 2588 from 2988 leaves us 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.

Advancing to step 9:
When dividing 4000 by 647, we get 6 with a remainder of 118.
Use 6 as the next digit of our solution. 
Result so far: 31714.6
Subtracting 3882 from 4000 leaves us with 118.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1180, and continue the process.

On to step 10:
When dividing 1180 by 647, we get 1 with a remainder of 533.
Put 1 as the next digit of the answer. 
Result so far: 31714.61
Subtracting 647 from 1180 leaves us with 533.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5330, and continue the process.

Moving on to step 11:
The number 647 fits into 5330 8 times, leaving a remainder of 154.
Use 8 as the next digit of our solution. 
Result so far: 31714.618
Subtracting 5176 from 5330 leaves us with 154.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1540, and continue the process.

On to step 12:
647 can be fit into 1540 2 times, resulting in a remainder of 246.
The number 2 becomes the next digit in our result. 
Result so far: 31714.6182
Subtract 1294 from 1540 to get 246.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2460, and continue the process.

Moving on to step 13:
If we divide 2460 by 647, we get 3 and a remainder of 519.
Put 3 as the next digit of the answer. 
Result so far: 31714.61823
If we subtract 1941 from 2460, we get 519.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5190, and continue the process.

Going ahead to step 14:
647 goes into 5190 8 times with a remainder of 14.
The next digit of our result is 8. 
Result so far: 31714.618238
If we take 5176 away from 5190, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 15:
If we divide 140 by 647, we get 0 and a remainder of 140.
The next digit of our result is 0. 
Result so far: 31714.618238
The remainder is 140 after subtracting 0 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Let's proceed to step 16:
1400 divided by 647 is 2 with a remainder of 106.
The number 2 becomes the next digit in our result. 
Result so far: 31714.61823802
Subtract 1294 from 1400 to get 106.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1060, and continue the process.

The final outcome is 31714.61823802, with a leftover of 1.06e-07.