Let's divide 661646 by 38
The aim is to understand the frequency of 38 in 661646.

Moving on to step 1:
The number 38 fits into 6 0 times, leaving a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Bring next digit (6) of the dividend behind the 6 and repeat the process: 66 / 38

Moving on to step 2:
If we divide 66 by 38, we get 1 and a remainder of 28.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 38 from 66, we get 28.
Take the next digit (1) from the dividend and append it to 28, then repeat: 281 / 38

Let's proceed to step 3:
When dividing 281 by 38, we get 7 with a remainder of 15.
The next digit of our result is 7. 
Result so far: 17.0
If we take 266 away from 281, we end up with 15.
Bring next digit (6) of the dividend behind the 15 and repeat the process: 156 / 38

Let's proceed to step 4:
When dividing 156 by 38, we get 4 with a remainder of 4.
Record the quotient 4 as the next digit in the result. 
Result so far: 174.0
Deduct 152 from 156 and we're left with 4.
Take the next digit (4) from the dividend and append it to 4, then repeat: 44 / 38

Step 5:
44 divided by 38 is 1 with a remainder of 6.
The number 1 becomes the next digit in our result. 
Result so far: 1741.0
Subtract 38 from 44 to get 6.
Append the next digit (6) from the dividend to 6 and continue with: 66 / 38

Going ahead to step 6:
When dividing 66 by 38, we get 1 with a remainder of 28.
Record the quotient 1 as the next digit in the result. 
Result so far: 17411.0
The remainder is 28 after subtracting 38 from 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Step 7:
38 can be fit into 280 7 times, resulting in a remainder of 14.
The number 7 becomes the next digit in our result. 
Result so far: 17411.7
Deduct 266 from 280 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Advancing to step 8:
140 divided by 38 is 3 with a remainder of 26.
Record the quotient 3 as the next digit in the result. 
Result so far: 17411.73
The remainder is 26 after subtracting 114 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Step 9:
The number 38 fits into 260 6 times, leaving a remainder of 32.
The number 6 becomes the next digit in our result. 
Result so far: 17411.736
Subtracting 228 from 260 leaves us with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Advancing to step 10:
38 can be fit into 320 8 times, resulting in a remainder of 16.
Put 8 as the next digit of the answer. 
Result so far: 17411.7368
Subtract 304 from 320 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 11:
The number 38 fits into 160 4 times, leaving a remainder of 8.
Record the quotient 4 as the next digit in the result. 
Result so far: 17411.73684
If we take 152 away from 160, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 12:
38 can be fit into 80 2 times, resulting in a remainder of 4.
Use 2 as the next digit of our solution. 
Result so far: 17411.736842
The remainder is 4 after subtracting 76 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 13:
If we divide 40 by 38, we get 1 and a remainder of 2.
The number 1 becomes the next digit in our result. 
Result so far: 17411.7368421
Subtract 38 from 40 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 14:
The number 38 fits into 20 0 times, leaving a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 17411.7368421
Deduct 0 from 20 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

After the division, we end up with 17411.7368421 and a remainder of 2e-08.