807873 ÷ 65 
The aim is to understand the frequency of 65 in 807873.

Moving on to step 1:
If we divide 8 by 65, we get 0 and a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Bring next digit (0) of the dividend behind the 8 and repeat the process: 80 / 65

On to step 2:
80 divided by 65 is 1 with a remainder of 15.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 65 from 80 to get 15.
Take the next digit (7) from the dividend and append it to 15, then repeat: 157 / 65

Moving on to step 3:
When dividing 157 by 65, we get 2 with a remainder of 27.
Write down 2 as next digit of the result. 
Result so far: 12.0
Subtract 130 from 157 to get 27.
Append the next digit (8) from the dividend to 27 and continue with: 278 / 65

On to step 4:
The number 65 fits into 278 4 times, leaving a remainder of 18.
Use 4 as the next digit of our solution. 
Result so far: 124.0
If we subtract 260 from 278, we get 18.
Append the next digit (7) from the dividend to 18 and continue with: 187 / 65

Advancing to step 5:
When dividing 187 by 65, we get 2 with a remainder of 57.
Write down 2 as next digit of the result. 
Result so far: 1242.0
Deduct 130 from 187 and we're left with 57.
Include the next digit (3) from the dividend after 57, then repeat: 573 / 65

Moving on to step 6:
When dividing 573 by 65, we get 8 with a remainder of 53.
The number 8 becomes the next digit in our result. 
Result so far: 12428.0
Subtracting 520 from 573 leaves us with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Going ahead to step 7:
The number 65 fits into 530 8 times, leaving a remainder of 10.
Write down 8 as next digit of the result. 
Result so far: 12428.8
If we take 520 away from 530, we end up 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.

Advancing to step 8:
The number 65 fits into 100 1 times, leaving a remainder of 35.
Use 1 as the next digit of our solution. 
Result so far: 12428.81
Deduct 65 from 100 and we're left with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Going ahead to step 9:
350 divided by 65 is 5 with a remainder of 25.
Record the quotient 5 as the next digit in the result. 
Result so far: 12428.815
Deduct 325 from 350 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 10:
If we divide 250 by 65, we get 3 and a remainder of 55.
Record the quotient 3 as the next digit in the result. 
Result so far: 12428.8153
The remainder is 55 after subtracting 195 from 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Going ahead to step 11:
65 goes into 550 8 times with a remainder of 30.
Record the quotient 8 as the next digit in the result. 
Result so far: 12428.81538
Subtracting 520 from 550 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 12:
300 divided by 65 is 4 with a remainder of 40.
Put 4 as the next digit of the answer. 
Result so far: 12428.815384
If we take 260 away from 300, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 13:
If we divide 400 by 65, we get 6 and a remainder of 10.
Use 6 as the next digit of our solution. 
Result so far: 12428.8153846
If we take 390 away from 400, we end up 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.

Advancing to step 14:
When dividing 100 by 65, we get 1 with a remainder of 35.
Record the quotient 1 as the next digit in the result. 
Result so far: 12428.81538461
If we subtract 65 from 100, we get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

The final outcome is 12428.81538461, with a leftover of 3.5e-08.