53950539 divided by 388 
The aim is to understand the frequency of 388 in 53950539.

Advancing to step 1:
When dividing 5 by 388, we get 0 with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Fetch the next digit (3) from the dividend, attach it to 5 and continue: 53 / 388

Step 2:
If we divide 53 by 388, we get 0 and a remainder of 53.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 53 and we're left with 53.
Grab the next digit (9) from the dividend, add it to 53, then carry on: 539 / 388

Moving on to step 3:
388 can be fit into 539 1 times, resulting in a remainder of 151.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 388 from 539, we get 151.
Include the next digit (5) from the dividend after 151, then repeat: 1515 / 388

Advancing to step 4:
If we divide 1515 by 388, we get 3 and a remainder of 351.
The next digit of our result is 3. 
Result so far: 13.0
Subtract 1164 from 1515 to get 351.
Grab the next digit (0) from the dividend, add it to 351, then carry on: 3510 / 388

Going ahead to step 5:
When dividing 3510 by 388, we get 9 with a remainder of 18.
The next digit of our result is 9. 
Result so far: 139.0
Subtracting 3492 from 3510 leaves us with 18.
Grab the next digit (5) from the dividend, add it to 18, then carry on: 185 / 388

Going ahead to step 6:
If we divide 185 by 388, we get 0 and a remainder of 185.
Put 0 as the next digit of the answer. 
Result so far: 1390.0
Subtracting 0 from 185 leaves us with 185.
Bring next digit (3) of the dividend behind the 185 and repeat the process: 1853 / 388

Moving on to step 7:
388 goes into 1853 4 times with a remainder of 301.
The number 4 becomes the next digit in our result. 
Result so far: 13904.0
Subtract 1552 from 1853 to get 301.
Include the next digit (9) from the dividend after 301, then repeat: 3019 / 388

Advancing to step 8:
388 goes into 3019 7 times with a remainder of 303.
Put 7 as the next digit of the answer. 
Result so far: 139047.0
If we take 2716 away from 3019, we end up with 303.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3030, and continue the process.

Let's proceed to step 9:
3030 divided by 388 is 7 with a remainder of 314.
Use 7 as the next digit of our solution. 
Result so far: 139047.7
If we take 2716 away from 3030, we end up with 314.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3140, and continue the process.

Step 10:
388 goes into 3140 8 times with a remainder of 36.
Write down 8 as next digit of the result. 
Result so far: 139047.78
If we subtract 3104 from 3140, we 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 11:
388 can be fit into 360 0 times, resulting in a remainder of 360.
Use 0 as the next digit of our solution. 
Result so far: 139047.78
Subtracting 0 from 360 leaves us 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.

On to step 12:
If we divide 3600 by 388, we get 9 and a remainder of 108.
Put 9 as the next digit of the answer. 
Result so far: 139047.7809
Subtract 3492 from 3600 to get 108.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1080, and continue the process.

On to step 13:
388 goes into 1080 2 times with a remainder of 304.
Put 2 as the next digit of the answer. 
Result so far: 139047.78092
The remainder is 304 after subtracting 776 from 1080.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3040, and continue the process.

Let's proceed to step 14:
3040 divided by 388 is 7 with a remainder of 324.
Record the quotient 7 as the next digit in the result. 
Result so far: 139047.780927
Deduct 2716 from 3040 and we're left with 324.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3240, and continue the process.

Advancing to step 15:
388 can be fit into 3240 8 times, resulting in a remainder of 136.
Put 8 as the next digit of the answer. 
Result so far: 139047.7809278
Subtracting 3104 from 3240 leaves us with 136.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1360, and continue the process.

Going ahead to step 16:
388 goes into 1360 3 times with a remainder of 196.
Use 3 as the next digit of our solution. 
Result so far: 139047.78092783
If we take 1164 away from 1360, we end up with 196.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1960, and continue the process.

The final result is 139047.78092783 with a remainder of 1.96e-07.