65999769 ÷ 456 
The aim is to understand the frequency of 456 in 65999769.

Let's proceed to step 1:
456 goes into 6 0 times with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Take the next digit (5) from the dividend and append it to 6, then repeat: 65 / 456

On to step 2:
456 goes into 65 0 times with a remainder of 65.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 65 to get 65.
Bring next digit (9) of the dividend behind the 65 and repeat the process: 659 / 456

Advancing to step 3:
456 goes into 659 1 times with a remainder of 203.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 456 from 659 and we're left with 203.
Include the next digit (9) from the dividend after 203, then repeat: 2039 / 456

Going ahead to step 4:
When dividing 2039 by 456, we get 4 with a remainder of 215.
Use 4 as the next digit of our solution. 
Result so far: 14.0
If we take 1824 away from 2039, we end up with 215.
Bring next digit (9) of the dividend behind the 215 and repeat the process: 2159 / 456

Advancing to step 5:
The number 456 fits into 2159 4 times, leaving a remainder of 335.
The number 4 becomes the next digit in our result. 
Result so far: 144.0
Subtract 1824 from 2159 to get 335.
Include the next digit (7) from the dividend after 335, then repeat: 3357 / 456

On to step 6:
When dividing 3357 by 456, we get 7 with a remainder of 165.
Record the quotient 7 as the next digit in the result. 
Result so far: 1447.0
Subtracting 3192 from 3357 leaves us with 165.
Include the next digit (6) from the dividend after 165, then repeat: 1656 / 456

Moving on to step 7:
1656 divided by 456 is 3 with a remainder of 288.
Record the quotient 3 as the next digit in the result. 
Result so far: 14473.0
Subtract 1368 from 1656 to get 288.
Append the next digit (9) from the dividend to 288 and continue with: 2889 / 456

On to step 8:
456 can be fit into 2889 6 times, resulting in a remainder of 153.
Put 6 as the next digit of the answer. 
Result so far: 144736.0
If we take 2736 away from 2889, we end up with 153.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1530, and continue the process.

Going ahead to step 9:
456 goes into 1530 3 times with a remainder of 162.
Use 3 as the next digit of our solution. 
Result so far: 144736.3
Subtract 1368 from 1530 to get 162.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1620, and continue the process.

Step 10:
456 goes into 1620 3 times with a remainder of 252.
Record the quotient 3 as the next digit in the result. 
Result so far: 144736.33
If we take 1368 away from 1620, we end up with 252.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2520, and continue the process.

The final outcome is 144736.33, with a leftover of 0.252.