Let's divide 53187557 by 375
The aim is to understand the frequency of 375 in 53187557.

Going ahead to step 1:
The number 375 fits into 5 0 times, leaving a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Take the next digit (3) from the dividend and append it to 5, then repeat: 53 / 375

Advancing to step 2:
375 can be fit into 53 0 times, resulting in a remainder of 53.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 53 after subtracting 0 from 53.
Take the next digit (1) from the dividend and append it to 53, then repeat: 531 / 375

Moving on to step 3:
531 divided by 375 is 1 with a remainder of 156.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 375 from 531, we get 156.
Take the next digit (8) from the dividend and append it to 156, then repeat: 1568 / 375

Let's proceed to step 4:
When dividing 1568 by 375, we get 4 with a remainder of 68.
The next digit of our result is 4. 
Result so far: 14.0
Subtracting 1500 from 1568 leaves us with 68.
Include the next digit (7) from the dividend after 68, then repeat: 687 / 375

Going ahead to step 5:
687 divided by 375 is 1 with a remainder of 312.
Put 1 as the next digit of the answer. 
Result so far: 141.0
Deduct 375 from 687 and we're left with 312.
Include the next digit (5) from the dividend after 312, then repeat: 3125 / 375

Let's proceed to step 6:
3125 divided by 375 is 8 with a remainder of 125.
The number 8 becomes the next digit in our result. 
Result so far: 1418.0
Subtracting 3000 from 3125 leaves us with 125.
Grab the next digit (5) from the dividend, add it to 125, then carry on: 1255 / 375

Moving on to step 7:
If we divide 1255 by 375, we get 3 and a remainder of 130.
Put 3 as the next digit of the answer. 
Result so far: 14183.0
Deduct 1125 from 1255 and we're left with 130.
Append the next digit (7) from the dividend to 130 and continue with: 1307 / 375

Let's proceed to step 8:
If we divide 1307 by 375, we get 3 and a remainder of 182.
The number 3 becomes the next digit in our result. 
Result so far: 141833.0
Subtract 1125 from 1307 to get 182.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1820, and continue the process.

Going ahead to step 9:
If we divide 1820 by 375, we get 4 and a remainder of 320.
Record the quotient 4 as the next digit in the result. 
Result so far: 141833.4
The remainder is 320 after subtracting 1500 from 1820.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Moving on to step 10:
If we divide 3200 by 375, we get 8 and a remainder of 200.
Record the quotient 8 as the next digit in the result. 
Result so far: 141833.48
Subtract 3000 from 3200 to get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Going ahead to step 11:
375 goes into 2000 5 times with a remainder of 125.
The number 5 becomes the next digit in our result. 
Result so far: 141833.485
The remainder is 125 after subtracting 1875 from 2000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Advancing to step 12:
1250 divided by 375 is 3 with a remainder of 125.
Write down 3 as next digit of the result. 
Result so far: 141833.4853
The remainder is 125 after subtracting 1125 from 1250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Step 13:
375 can be fit into 1250 3 times, resulting in a remainder of 125.
Use 3 as the next digit of our solution. 
Result so far: 141833.48533
Deduct 1125 from 1250 and we're left with 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

After the division, we end up with 141833.48533 and a remainder of 0.000125.