We look at the division of 64255557 by 345 
The aim is to understand the frequency of 345 in 64255557.

Moving on to step 1:
6 divided by 345 is 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Include the next digit (4) from the dividend after 6, then repeat: 64 / 345

Let's proceed to step 2:
The number 345 fits into 64 0 times, leaving a remainder of 64.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 64, we end up with 64.
Fetch the next digit (2) from the dividend, attach it to 64 and continue: 642 / 345

On to step 3:
345 can be fit into 642 1 times, resulting in a remainder of 297.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 345 from 642 and we're left with 297.
Append the next digit (5) from the dividend to 297 and continue with: 2975 / 345

Let's proceed to step 4:
If we divide 2975 by 345, we get 8 and a remainder of 215.
The number 8 becomes the next digit in our result. 
Result so far: 18.0
Subtracting 2760 from 2975 leaves us with 215.
Fetch the next digit (5) from the dividend, attach it to 215 and continue: 2155 / 345

On to step 5:
When dividing 2155 by 345, we get 6 with a remainder of 85.
Put 6 as the next digit of the answer. 
Result so far: 186.0
Subtracting 2070 from 2155 leaves us with 85.
Bring next digit (5) of the dividend behind the 85 and repeat the process: 855 / 345

On to step 6:
If we divide 855 by 345, we get 2 and a remainder of 165.
Record the quotient 2 as the next digit in the result. 
Result so far: 1862.0
Deduct 690 from 855 and we're left with 165.
Append the next digit (5) from the dividend to 165 and continue with: 1655 / 345

Let's proceed to step 7:
345 can be fit into 1655 4 times, resulting in a remainder of 275.
The next digit of our result is 4. 
Result so far: 18624.0
If we subtract 1380 from 1655, we get 275.
Fetch the next digit (7) from the dividend, attach it to 275 and continue: 2757 / 345

Step 8:
The number 345 fits into 2757 7 times, leaving a remainder of 342.
Put 7 as the next digit of the answer. 
Result so far: 186247.0
If we subtract 2415 from 2757, we get 342.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3420, and continue the process.

Going ahead to step 9:
The number 345 fits into 3420 9 times, leaving a remainder of 315.
Record the quotient 9 as the next digit in the result. 
Result so far: 186247.9
Subtract 3105 from 3420 to get 315.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3150, and continue the process.

Moving on to step 10:
If we divide 3150 by 345, we get 9 and a remainder of 45.
The number 9 becomes the next digit in our result. 
Result so far: 186247.99
Deduct 3105 from 3150 and we're left with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Our division results in 186247.99 with a remaining 0.045.