6391614 divided by 252 
The aim is to understand the frequency of 252 in 6391614.

Step 1:
6 divided by 252 is 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Append the next digit (3) from the dividend to 6 and continue with: 63 / 252

Going ahead to step 2:
The number 252 fits into 63 0 times, leaving a remainder of 63.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 63 and we're left with 63.
Include the next digit (9) from the dividend after 63, then repeat: 639 / 252

On to step 3:
If we divide 639 by 252, we get 2 and a remainder of 135.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we take 504 away from 639, we end up with 135.
Append the next digit (1) from the dividend to 135 and continue with: 1351 / 252

Let's proceed to step 4:
When dividing 1351 by 252, we get 5 with a remainder of 91.
Put 5 as the next digit of the answer. 
Result so far: 25.0
Subtract 1260 from 1351 to get 91.
Bring next digit (6) of the dividend behind the 91 and repeat the process: 916 / 252

Advancing to step 5:
When dividing 916 by 252, we get 3 with a remainder of 160.
Write down 3 as next digit of the result. 
Result so far: 253.0
Deduct 756 from 916 and we're left with 160.
Take the next digit (1) from the dividend and append it to 160, then repeat: 1601 / 252

On to step 6:
The number 252 fits into 1601 6 times, leaving a remainder of 89.
Write down 6 as next digit of the result. 
Result so far: 2536.0
The remainder is 89 after subtracting 1512 from 1601.
Include the next digit (4) from the dividend after 89, then repeat: 894 / 252

On to step 7:
The number 252 fits into 894 3 times, leaving a remainder of 138.
The number 3 becomes the next digit in our result. 
Result so far: 25363.0
Deduct 756 from 894 and we're left with 138.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1380, and continue the process.

Advancing to step 8:
The number 252 fits into 1380 5 times, leaving a remainder of 120.
Record the quotient 5 as the next digit in the result. 
Result so far: 25363.5
The remainder is 120 after subtracting 1260 from 1380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Let's proceed to step 9:
1200 divided by 252 is 4 with a remainder of 192.
Put 4 as the next digit of the answer. 
Result so far: 25363.54
Subtract 1008 from 1200 to get 192.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

Step 10:
If we divide 1920 by 252, we get 7 and a remainder of 156.
Put 7 as the next digit of the answer. 
Result so far: 25363.547
The remainder is 156 after subtracting 1764 from 1920.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1560, and continue the process.

Going ahead to step 11:
252 goes into 1560 6 times with a remainder of 48.
Put 6 as the next digit of the answer. 
Result so far: 25363.5476
Deduct 1512 from 1560 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Moving on to step 12:
252 can be fit into 480 1 times, resulting in a remainder of 228.
Write down 1 as next digit of the result. 
Result so far: 25363.54761
Subtracting 252 from 480 leaves us with 228.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2280, and continue the process.

Let's proceed to step 13:
252 goes into 2280 9 times with a remainder of 12.
The next digit of our result is 9. 
Result so far: 25363.547619
Subtracting 2268 from 2280 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 14:
252 can be fit into 120 0 times, resulting in a remainder of 120.
The number 0 becomes the next digit in our result. 
Result so far: 25363.547619
If we take 0 away from 120, we end up with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Moving on to step 15:
The number 252 fits into 1200 4 times, leaving a remainder of 192.
The next digit of our result is 4. 
Result so far: 25363.54761904
If we take 1008 away from 1200, we end up with 192.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

The final outcome is 25363.54761904, with a leftover of 1.92e-07.