Let's divide 878573 by 14
The aim is to understand the frequency of 14 in 878573.

Going ahead to step 1:
The number 14 fits into 8 0 times, leaving a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Include the next digit (7) from the dividend after 8, then repeat: 87 / 14

Advancing to step 2:
14 can be fit into 87 6 times, resulting in a remainder of 3.
Put 6 as the next digit of the answer. 
Result so far: 6.0
If we subtract 84 from 87, we get 3.
Bring next digit (8) of the dividend behind the 3 and repeat the process: 38 / 14

Going ahead to step 3:
The number 14 fits into 38 2 times, leaving a remainder of 10.
Write down 2 as next digit of the result. 
Result so far: 62.0
Subtract 28 from 38 to get 10.
Bring next digit (5) of the dividend behind the 10 and repeat the process: 105 / 14

Moving on to step 4:
14 goes into 105 7 times with a remainder of 7.
Use 7 as the next digit of our solution. 
Result so far: 627.0
Deduct 98 from 105 and we're left with 7.
Append the next digit (7) from the dividend to 7 and continue with: 77 / 14

Moving on to step 5:
14 goes into 77 5 times with a remainder of 7.
The number 5 becomes the next digit in our result. 
Result so far: 6275.0
Subtracting 70 from 77 leaves us with 7.
Include the next digit (3) from the dividend after 7, then repeat: 73 / 14

Advancing to step 6:
If we divide 73 by 14, we get 5 and a remainder of 3.
Use 5 as the next digit of our solution. 
Result so far: 62755.0
If we subtract 70 from 73, we get 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 7:
When dividing 30 by 14, we get 2 with a remainder of 2.
The number 2 becomes the next digit in our result. 
Result so far: 62755.2
Deduct 28 from 30 and we're left 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.

Step 8:
20 divided by 14 is 1 with a remainder of 6.
The number 1 becomes the next digit in our result. 
Result so far: 62755.21
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.

On to step 9:
14 goes into 60 4 times with a remainder of 4.
Record the quotient 4 as the next digit in the result. 
Result so far: 62755.214
Subtract 56 from 60 to 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.

Going ahead to step 10:
The number 14 fits into 40 2 times, leaving a remainder of 12.
Write down 2 as next digit of the result. 
Result so far: 62755.2142
Subtract 28 from 40 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 11:
When dividing 120 by 14, we get 8 with a remainder of 8.
Put 8 as the next digit of the answer. 
Result so far: 62755.21428
Deduct 112 from 120 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 12:
14 can be fit into 80 5 times, resulting in a remainder of 10.
Record the quotient 5 as the next digit in the result. 
Result so far: 62755.214285
Deduct 70 from 80 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 13:
14 can be fit into 100 7 times, resulting in a remainder of 2.
Put 7 as the next digit of the answer. 
Result so far: 62755.2142857
Subtracting 98 from 100 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.

Step 14:
When dividing 20 by 14, we get 1 with a remainder of 6.
Use 1 as the next digit of our solution. 
Result so far: 62755.21428571
If we take 14 away from 20, we end up 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.

After the division, we end up with 62755.21428571 and a remainder of 6e-09.