81842940 ÷ 65 
The aim is to understand the frequency of 65 in 81842940.

Let's proceed to step 1:
65 can be fit into 8 0 times, resulting in 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.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 65

Going ahead to step 2:
65 can be fit into 81 1 times, resulting in a remainder of 16.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 65 from 81 leaves us with 16.
Take the next digit (8) from the dividend and append it to 16, then repeat: 168 / 65

Step 3:
65 can be fit into 168 2 times, resulting in a remainder of 38.
Put 2 as the next digit of the answer. 
Result so far: 12.0
Subtracting 130 from 168 leaves us with 38.
Fetch the next digit (4) from the dividend, attach it to 38 and continue: 384 / 65

Moving on to step 4:
When dividing 384 by 65, we get 5 with a remainder of 59.
Write down 5 as next digit of the result. 
Result so far: 125.0
Subtract 325 from 384 to get 59.
Include the next digit (2) from the dividend after 59, then repeat: 592 / 65

Step 5:
65 can be fit into 592 9 times, resulting in a remainder of 7.
Use 9 as the next digit of our solution. 
Result so far: 1259.0
Subtract 585 from 592 to get 7.
Bring next digit (9) of the dividend behind the 7 and repeat the process: 79 / 65

Let's proceed to step 6:
When dividing 79 by 65, we get 1 with a remainder of 14.
Write down 1 as next digit of the result. 
Result so far: 12591.0
Subtract 65 from 79 to get 14.
Bring next digit (4) of the dividend behind the 14 and repeat the process: 144 / 65

Let's proceed to step 7:
When dividing 144 by 65, we get 2 with a remainder of 14.
Record the quotient 2 as the next digit in the result. 
Result so far: 125912.0
If we take 130 away from 144, we end up with 14.
Include the next digit (0) from the dividend after 14, then repeat: 140 / 65

Moving on to step 8:
If we divide 140 by 65, we get 2 and a remainder of 10.
Use 2 as the next digit of our solution. 
Result so far: 1259122.0
If we take 130 away from 140, 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 9:
65 can be fit into 100 1 times, resulting in a remainder of 35.
Put 1 as the next digit of the answer. 
Result so far: 1259122.1
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.

Going ahead to step 10:
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: 1259122.15
If we subtract 325 from 350, we get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Let's proceed to step 11:
250 divided by 65 is 3 with a remainder of 55.
The next digit of our result is 3. 
Result so far: 1259122.153
If we take 195 away from 250, we end up with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Advancing to step 12:
The number 65 fits into 550 8 times, leaving a remainder of 30.
Write down 8 as next digit of the result. 
Result so far: 1259122.1538
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.

Moving on to step 13:
If we divide 300 by 65, we get 4 and a remainder of 40.
Put 4 as the next digit of the answer. 
Result so far: 1259122.15384
If we subtract 260 from 300, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 14:
The number 65 fits into 400 6 times, leaving a remainder of 10.
Use 6 as the next digit of our solution. 
Result so far: 1259122.153846
If we subtract 390 from 400, we get 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 15:
When dividing 100 by 65, we get 1 with a remainder of 35.
The next digit of our result is 1. 
Result so far: 1259122.1538461
The remainder is 35 after subtracting 65 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

On to step 16:
When dividing 350 by 65, we get 5 with a remainder of 25.
Use 5 as the next digit of our solution. 
Result so far: 1259122.15384615
If we subtract 325 from 350, we get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

After the division, we end up with 1259122.15384615 and a remainder of 2.5e-08.