We look at the division of 3881644 by 374 
The aim is to understand the frequency of 374 in 3881644.

Going ahead to step 1:
3 divided by 374 is 0 with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Bring next digit (8) of the dividend behind the 3 and repeat the process: 38 / 374

Advancing to step 2:
38 divided by 374 is 0 with a remainder of 38.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 38 leaves us with 38.
Include the next digit (8) from the dividend after 38, then repeat: 388 / 374

Moving on to step 3:
When dividing 388 by 374, we get 1 with a remainder of 14.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 374 from 388, we get 14.
Append the next digit (1) from the dividend to 14 and continue with: 141 / 374

Advancing to step 4:
374 can be fit into 141 0 times, resulting in a remainder of 141.
Put 0 as the next digit of the answer. 
Result so far: 10.0
Deduct 0 from 141 and we're left with 141.
Take the next digit (6) from the dividend and append it to 141, then repeat: 1416 / 374

Moving on to step 5:
If we divide 1416 by 374, we get 3 and a remainder of 294.
The number 3 becomes the next digit in our result. 
Result so far: 103.0
Subtracting 1122 from 1416 leaves us with 294.
Append the next digit (4) from the dividend to 294 and continue with: 2944 / 374

Moving on to step 6:
374 can be fit into 2944 7 times, resulting in a remainder of 326.
Use 7 as the next digit of our solution. 
Result so far: 1037.0
If we take 2618 away from 2944, we end up with 326.
Take the next digit (4) from the dividend and append it to 326, then repeat: 3264 / 374

Going ahead to step 7:
374 can be fit into 3264 8 times, resulting in a remainder of 272.
The number 8 becomes the next digit in our result. 
Result so far: 10378.0
If we subtract 2992 from 3264, we get 272.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

On to step 8:
If we divide 2720 by 374, we get 7 and a remainder of 102.
The number 7 becomes the next digit in our result. 
Result so far: 10378.7
If we take 2618 away from 2720, we end up with 102.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1020, and continue the process.

Moving on to step 9:
When dividing 1020 by 374, we get 2 with a remainder of 272.
Write down 2 as next digit of the result. 
Result so far: 10378.72
The remainder is 272 after subtracting 748 from 1020.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

Advancing to step 10:
The number 374 fits into 2720 7 times, leaving a remainder of 102.
The number 7 becomes the next digit in our result. 
Result so far: 10378.727
Subtracting 2618 from 2720 leaves us with 102.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1020, and continue the process.

Moving on to step 11:
374 can be fit into 1020 2 times, resulting in a remainder of 272.
The number 2 becomes the next digit in our result. 
Result so far: 10378.7272
Subtracting 748 from 1020 leaves us with 272.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

Advancing to step 12:
When dividing 2720 by 374, we get 7 with a remainder of 102.
Put 7 as the next digit of the answer. 
Result so far: 10378.72727
Subtracting 2618 from 2720 leaves us with 102.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1020, and continue the process.

Moving on to step 13:
374 goes into 1020 2 times with a remainder of 272.
Record the quotient 2 as the next digit in the result. 
Result so far: 10378.727272
The remainder is 272 after subtracting 748 from 1020.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

Step 14:
374 goes into 2720 7 times with a remainder of 102.
Put 7 as the next digit of the answer. 
Result so far: 10378.7272727
If we subtract 2618 from 2720, we get 102.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1020, and continue the process.

On to step 15:
If we divide 1020 by 374, we get 2 and a remainder of 272.
The next digit of our result is 2. 
Result so far: 10378.72727272
If we take 748 away from 1020, we end up with 272.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

Our division results in 10378.72727272 with a remaining 2.72e-07.