Let's divide 253872 by 7
The aim is to understand the frequency of 7 in 253872.

Let's proceed to step 1:
The number 7 fits into 2 0 times, leaving a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Grab the next digit (5) from the dividend, add it to 2, then carry on: 25 / 7

Let's proceed to step 2:
25 divided by 7 is 3 with a remainder of 4.
Put 3 as the next digit of the answer. 
Result so far: 3.0
The remainder is 4 after subtracting 21 from 25.
Take the next digit (3) from the dividend and append it to 4, then repeat: 43 / 7

Step 3:
When dividing 43 by 7, we get 6 with a remainder of 1.
The next digit of our result is 6. 
Result so far: 36.0
If we take 42 away from 43, we end up with 1.
Fetch the next digit (8) from the dividend, attach it to 1 and continue: 18 / 7

Let's proceed to step 4:
7 can be fit into 18 2 times, resulting in a remainder of 4.
The number 2 becomes the next digit in our result. 
Result so far: 362.0
If we subtract 14 from 18, we get 4.
Take the next digit (7) from the dividend and append it to 4, then repeat: 47 / 7

Advancing to step 5:
When dividing 47 by 7, we get 6 with a remainder of 5.
Write down 6 as next digit of the result. 
Result so far: 3626.0
If we take 42 away from 47, we end up with 5.
Fetch the next digit (2) from the dividend, attach it to 5 and continue: 52 / 7

Going ahead to step 6:
7 can be fit into 52 7 times, resulting in a remainder of 3.
Write down 7 as next digit of the result. 
Result so far: 36267.0
Subtracting 49 from 52 leaves us with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

On to step 7:
When dividing 30 by 7, we get 4 with a remainder of 2.
Put 4 as the next digit of the answer. 
Result so far: 36267.4
Subtracting 28 from 30 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 8:
20 divided by 7 is 2 with a remainder of 6.
Put 2 as the next digit of the answer. 
Result so far: 36267.42
Subtracting 14 from 20 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 9:
7 goes into 60 8 times with a remainder of 4.
Use 8 as the next digit of our solution. 
Result so far: 36267.428
If we subtract 56 from 60, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 10:
When dividing 40 by 7, we get 5 with a remainder of 5.
The next digit of our result is 5. 
Result so far: 36267.4285
Deduct 35 from 40 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 11:
When dividing 50 by 7, we get 7 with a remainder of 1.
Write down 7 as next digit of the result. 
Result so far: 36267.42857
If we subtract 49 from 50, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 12:
When dividing 10 by 7, we get 1 with a remainder of 3.
The number 1 becomes the next digit in our result. 
Result so far: 36267.428571
Subtracting 7 from 10 leaves us with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Let's proceed to step 13:
If we divide 30 by 7, we get 4 and a remainder of 2.
Record the quotient 4 as the next digit in the result. 
Result so far: 36267.4285714
The remainder is 2 after subtracting 28 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 14:
20 divided by 7 is 2 with a remainder of 6.
Use 2 as the next digit of our solution. 
Result so far: 36267.42857142
The remainder is 6 after subtracting 14 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

The final outcome is 36267.42857142, with a leftover of 6e-09.