75175780 ÷ 388 
The aim is to understand the frequency of 388 in 75175780.

Advancing to step 1:
388 goes into 7 0 times with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Take the next digit (5) from the dividend and append it to 7, then repeat: 75 / 388

On to step 2:
388 goes into 75 0 times with a remainder of 75.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 75 leaves us with 75.
Fetch the next digit (1) from the dividend, attach it to 75 and continue: 751 / 388

On to step 3:
The number 388 fits into 751 1 times, leaving a remainder of 363.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 388 from 751 leaves us with 363.
Grab the next digit (7) from the dividend, add it to 363, then carry on: 3637 / 388

Moving on to step 4:
388 goes into 3637 9 times with a remainder of 145.
The number 9 becomes the next digit in our result. 
Result so far: 19.0
Deduct 3492 from 3637 and we're left with 145.
Fetch the next digit (5) from the dividend, attach it to 145 and continue: 1455 / 388

Let's proceed to step 5:
The number 388 fits into 1455 3 times, leaving a remainder of 291.
Put 3 as the next digit of the answer. 
Result so far: 193.0
Subtract 1164 from 1455 to get 291.
Include the next digit (7) from the dividend after 291, then repeat: 2917 / 388

Advancing to step 6:
388 goes into 2917 7 times with a remainder of 201.
Use 7 as the next digit of our solution. 
Result so far: 1937.0
If we subtract 2716 from 2917, we get 201.
Bring next digit (8) of the dividend behind the 201 and repeat the process: 2018 / 388

Step 7:
388 can be fit into 2018 5 times, resulting in a remainder of 78.
The next digit of our result is 5. 
Result so far: 19375.0
If we take 1940 away from 2018, we end up with 78.
Bring next digit (0) of the dividend behind the 78 and repeat the process: 780 / 388

Advancing to step 8:
388 can be fit into 780 2 times, resulting in a remainder of 4.
Write down 2 as next digit of the result. 
Result so far: 193752.0
Deduct 776 from 780 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 9:
If we divide 40 by 388, we get 0 and a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 193752.0
If we take 0 away from 40, we end up 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.

Let's proceed to step 10:
When dividing 400 by 388, we get 1 with a remainder of 12.
The next digit of our result is 1. 
Result so far: 193752.01
Subtract 388 from 400 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 11:
The number 388 fits into 120 0 times, leaving a remainder of 120.
Record the quotient 0 as the next digit in the result. 
Result so far: 193752.01
The remainder is 120 after subtracting 0 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Advancing to step 12:
If we divide 1200 by 388, we get 3 and a remainder of 36.
The next digit of our result is 3. 
Result so far: 193752.0103
Subtract 1164 from 1200 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

On to step 13:
388 can be fit into 360 0 times, resulting in a remainder of 360.
The next digit of our result is 0. 
Result so far: 193752.0103
If we take 0 away from 360, we end up with 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Let's proceed to step 14:
When dividing 3600 by 388, we get 9 with a remainder of 108.
Record the quotient 9 as the next digit in the result. 
Result so far: 193752.010309
The remainder is 108 after subtracting 3492 from 3600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1080, and continue the process.

Let's proceed to step 15:
When dividing 1080 by 388, we get 2 with a remainder of 304.
Record the quotient 2 as the next digit in the result. 
Result so far: 193752.0103092
If we subtract 776 from 1080, we get 304.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3040, and continue the process.

Moving on to step 16:
When dividing 3040 by 388, we get 7 with a remainder of 324.
The next digit of our result is 7. 
Result so far: 193752.01030927
If we subtract 2716 from 3040, we get 324.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3240, and continue the process.

The final outcome is 193752.01030927, with a leftover of 3.24e-07.