We look at the division of 74554432 by 388 
The aim is to understand the frequency of 388 in 74554432.

On to step 1:
If we divide 7 by 388, we get 0 and a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Grab the next digit (4) from the dividend, add it to 7, then carry on: 74 / 388

On to step 2:
If we divide 74 by 388, we get 0 and a remainder of 74.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 74, we end up with 74.
Grab the next digit (5) from the dividend, add it to 74, then carry on: 745 / 388

Moving on to step 3:
The number 388 fits into 745 1 times, leaving a remainder of 357.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 388 from 745 and we're left with 357.
Append the next digit (5) from the dividend to 357 and continue with: 3575 / 388

Step 4:
388 goes into 3575 9 times with a remainder of 83.
Use 9 as the next digit of our solution. 
Result so far: 19.0
Subtracting 3492 from 3575 leaves us with 83.
Bring next digit (4) of the dividend behind the 83 and repeat the process: 834 / 388

Advancing to step 5:
388 can be fit into 834 2 times, resulting in a remainder of 58.
Put 2 as the next digit of the answer. 
Result so far: 192.0
Subtracting 776 from 834 leaves us with 58.
Include the next digit (4) from the dividend after 58, then repeat: 584 / 388

Moving on to step 6:
388 can be fit into 584 1 times, resulting in a remainder of 196.
Put 1 as the next digit of the answer. 
Result so far: 1921.0
The remainder is 196 after subtracting 388 from 584.
Take the next digit (3) from the dividend and append it to 196, then repeat: 1963 / 388

Step 7:
388 can be fit into 1963 5 times, resulting in a remainder of 23.
Use 5 as the next digit of our solution. 
Result so far: 19215.0
Subtracting 1940 from 1963 leaves us with 23.
Append the next digit (2) from the dividend to 23 and continue with: 232 / 388

Moving on to step 8:
If we divide 232 by 388, we get 0 and a remainder of 232.
The next digit of our result is 0. 
Result so far: 192150.0
Deduct 0 from 232 and we're left with 232.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2320, and continue the process.

Step 9:
When dividing 2320 by 388, we get 5 with a remainder of 380.
The number 5 becomes the next digit in our result. 
Result so far: 192150.5
Deduct 1940 from 2320 and we're left with 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

Moving on to step 10:
388 goes into 3800 9 times with a remainder of 308.
Write down 9 as next digit of the result. 
Result so far: 192150.59
Subtract 3492 from 3800 to get 308.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3080, and continue the process.

On to step 11:
The number 388 fits into 3080 7 times, leaving a remainder of 364.
Put 7 as the next digit of the answer. 
Result so far: 192150.597
The remainder is 364 after subtracting 2716 from 3080.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3640, and continue the process.

Advancing to step 12:
388 goes into 3640 9 times with a remainder of 148.
Record the quotient 9 as the next digit in the result. 
Result so far: 192150.5979
If we subtract 3492 from 3640, we get 148.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1480, and continue the process.

Advancing to step 13:
388 can be fit into 1480 3 times, resulting in a remainder of 316.
Use 3 as the next digit of our solution. 
Result so far: 192150.59793
The remainder is 316 after subtracting 1164 from 1480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3160, and continue the process.

Moving on to step 14:
3160 divided by 388 is 8 with a remainder of 56.
The number 8 becomes the next digit in our result. 
Result so far: 192150.597938
Subtracting 3104 from 3160 leaves us with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Moving on to step 15:
388 goes into 560 1 times with a remainder of 172.
Record the quotient 1 as the next digit in the result. 
Result so far: 192150.5979381
Subtracting 388 from 560 leaves us with 172.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1720, and continue the process.

On to step 16:
388 goes into 1720 4 times with a remainder of 168.
The next digit of our result is 4. 
Result so far: 192150.59793814
If we subtract 1552 from 1720, we get 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

After the division, we end up with 192150.59793814 and a remainder of 1.68e-07.