We look at the division of 51141570 by 352 
The aim is to understand the frequency of 352 in 51141570.

Let's proceed to step 1:
When dividing 5 by 352, we get 0 with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Take the next digit (1) from the dividend and append it to 5, then repeat: 51 / 352

On to step 2:
If we divide 51 by 352, we get 0 and a remainder of 51.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 51, we end up with 51.
Include the next digit (1) from the dividend after 51, then repeat: 511 / 352

On to step 3:
511 divided by 352 is 1 with a remainder of 159.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 352 from 511 leaves us with 159.
Append the next digit (4) from the dividend to 159 and continue with: 1594 / 352

Step 4:
352 can be fit into 1594 4 times, resulting in a remainder of 186.
Put 4 as the next digit of the answer. 
Result so far: 14.0
Subtract 1408 from 1594 to get 186.
Take the next digit (1) from the dividend and append it to 186, then repeat: 1861 / 352

Advancing to step 5:
When dividing 1861 by 352, we get 5 with a remainder of 101.
The number 5 becomes the next digit in our result. 
Result so far: 145.0
Deduct 1760 from 1861 and we're left with 101.
Include the next digit (5) from the dividend after 101, then repeat: 1015 / 352

On to step 6:
1015 divided by 352 is 2 with a remainder of 311.
The next digit of our result is 2. 
Result so far: 1452.0
The remainder is 311 after subtracting 704 from 1015.
Bring next digit (7) of the dividend behind the 311 and repeat the process: 3117 / 352

Advancing to step 7:
352 can be fit into 3117 8 times, resulting in a remainder of 301.
The next digit of our result is 8. 
Result so far: 14528.0
Subtracting 2816 from 3117 leaves us with 301.
Append the next digit (0) from the dividend to 301 and continue with: 3010 / 352

Going ahead to step 8:
When dividing 3010 by 352, we get 8 with a remainder of 194.
Write down 8 as next digit of the result. 
Result so far: 145288.0
If we take 2816 away from 3010, we end up with 194.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1940, and continue the process.

On to step 9:
352 goes into 1940 5 times with a remainder of 180.
Use 5 as the next digit of our solution. 
Result so far: 145288.5
If we take 1760 away from 1940, we end up with 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Going ahead to step 10:
The number 352 fits into 1800 5 times, leaving a remainder of 40.
Record the quotient 5 as the next digit in the result. 
Result so far: 145288.55
Subtracting 1760 from 1800 leaves us 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.

The final outcome is 145288.55, with a leftover of 0.04.