We look at the division of 455350 by 7 
The aim is to understand the frequency of 7 in 455350.

Going ahead to step 1:
When dividing 4 by 7, we get 0 with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Include the next digit (5) from the dividend after 4, then repeat: 45 / 7

Advancing to step 2:
When dividing 45 by 7, we get 6 with a remainder of 3.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
If we subtract 42 from 45, we get 3.
Append the next digit (5) from the dividend to 3 and continue with: 35 / 7

Going ahead to step 3:
If we divide 35 by 7, we get 5 and a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 65.0
Deduct 35 from 35 and we're left with 0.
Take the next digit (3) from the dividend and append it to 0, then repeat: 3 / 7

On to step 4:
The number 7 fits into 3 0 times, leaving a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 650.0
The remainder is 3 after subtracting 0 from 3.
Fetch the next digit (5) from the dividend, attach it to 3 and continue: 35 / 7

On to step 5:
The number 7 fits into 35 5 times, leaving a remainder of 0.
The next digit of our result is 5. 
Result so far: 6505.0
The remainder is 0 after subtracting 35 from 35.
Bring next digit (0) of the dividend behind the 0 and repeat the process: 0 / 7

Moving on to step 6:
7 can be fit into 0 0 times, resulting in a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 65050.0
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 7:
7 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 65050.0
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 8:
7 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 65050.0
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 65050.0, with a leftover of 0.0.