2571687 divided by 386 
The aim is to understand the frequency of 386 in 2571687.

Moving on to step 1:
If we divide 2 by 386, we get 0 and a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Include the next digit (5) from the dividend after 2, then repeat: 25 / 386

Step 2:
386 goes into 25 0 times with a remainder of 25.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 25, we get 25.
Take the next digit (7) from the dividend and append it to 25, then repeat: 257 / 386

Moving on to step 3:
The number 386 fits into 257 0 times, leaving a remainder of 257.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 257, we get 257.
Include the next digit (1) from the dividend after 257, then repeat: 2571 / 386

Step 4:
The number 386 fits into 2571 6 times, leaving a remainder of 255.
The next digit of our result is 6. 
Result so far: 6.0
The remainder is 255 after subtracting 2316 from 2571.
Include the next digit (6) from the dividend after 255, then repeat: 2556 / 386

On to step 5:
386 can be fit into 2556 6 times, resulting in a remainder of 240.
The next digit of our result is 6. 
Result so far: 66.0
The remainder is 240 after subtracting 2316 from 2556.
Include the next digit (8) from the dividend after 240, then repeat: 2408 / 386

Moving on to step 6:
The number 386 fits into 2408 6 times, leaving a remainder of 92.
The next digit of our result is 6. 
Result so far: 666.0
The remainder is 92 after subtracting 2316 from 2408.
Bring next digit (7) of the dividend behind the 92 and repeat the process: 927 / 386

Let's proceed to step 7:
The number 386 fits into 927 2 times, leaving a remainder of 155.
The number 2 becomes the next digit in our result. 
Result so far: 6662.0
Deduct 772 from 927 and we're left with 155.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1550, and continue the process.

On to step 8:
When dividing 1550 by 386, we get 4 with a remainder of 6.
Put 4 as the next digit of the answer. 
Result so far: 6662.4
If we subtract 1544 from 1550, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 9:
The number 386 fits into 60 0 times, leaving a remainder of 60.
Write down 0 as next digit of the result. 
Result so far: 6662.4
If we subtract 0 from 60, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Let's proceed to step 10:
386 goes into 600 1 times with a remainder of 214.
Use 1 as the next digit of our solution. 
Result so far: 6662.401
Deduct 386 from 600 and we're left with 214.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2140, and continue the process.

Let's proceed to step 11:
The number 386 fits into 2140 5 times, leaving a remainder of 210.
The number 5 becomes the next digit in our result. 
Result so far: 6662.4015
Subtract 1930 from 2140 to get 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Advancing to step 12:
2100 divided by 386 is 5 with a remainder of 170.
The next digit of our result is 5. 
Result so far: 6662.40155
The remainder is 170 after subtracting 1930 from 2100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

The final result is 6662.40155 with a remainder of 0.00017.