Let's divide 13943691 by 419
The aim is to understand the frequency of 419 in 13943691.

On to step 1:
419 goes into 1 0 times with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Include the next digit (3) from the dividend after 1, then repeat: 13 / 419

Going ahead to step 2:
The number 419 fits into 13 0 times, leaving a remainder of 13.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 13 leaves us with 13.
Append the next digit (9) from the dividend to 13 and continue with: 139 / 419

Moving on to step 3:
139 divided by 419 is 0 with a remainder of 139.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 139 to get 139.
Bring next digit (4) of the dividend behind the 139 and repeat the process: 1394 / 419

Going ahead to step 4:
419 can be fit into 1394 3 times, resulting in a remainder of 137.
Use 3 as the next digit of our solution. 
Result so far: 3.0
The remainder is 137 after subtracting 1257 from 1394.
Grab the next digit (3) from the dividend, add it to 137, then carry on: 1373 / 419

Let's proceed to step 5:
419 goes into 1373 3 times with a remainder of 116.
Use 3 as the next digit of our solution. 
Result so far: 33.0
Deduct 1257 from 1373 and we're left with 116.
Grab the next digit (6) from the dividend, add it to 116, then carry on: 1166 / 419

Moving on to step 6:
1166 divided by 419 is 2 with a remainder of 328.
The next digit of our result is 2. 
Result so far: 332.0
Deduct 838 from 1166 and we're left with 328.
Include the next digit (9) from the dividend after 328, then repeat: 3289 / 419

Step 7:
If we divide 3289 by 419, we get 7 and a remainder of 356.
Put 7 as the next digit of the answer. 
Result so far: 3327.0
If we take 2933 away from 3289, we end up with 356.
Append the next digit (1) from the dividend to 356 and continue with: 3561 / 419

Moving on to step 8:
If we divide 3561 by 419, we get 8 and a remainder of 209.
Record the quotient 8 as the next digit in the result. 
Result so far: 33278.0
Subtract 3352 from 3561 to get 209.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2090, and continue the process.

Moving on to step 9:
2090 divided by 419 is 4 with a remainder of 414.
Write down 4 as next digit of the result. 
Result so far: 33278.4
Subtract 1676 from 2090 to get 414.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4140, and continue the process.

Let's proceed to step 10:
The number 419 fits into 4140 9 times, leaving a remainder of 369.
Use 9 as the next digit of our solution. 
Result so far: 33278.49
The remainder is 369 after subtracting 3771 from 4140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3690, and continue the process.

Going ahead to step 11:
419 goes into 3690 8 times with a remainder of 338.
Write down 8 as next digit of the result. 
Result so far: 33278.498
If we take 3352 away from 3690, we end up with 338.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3380, and continue the process.

Let's proceed to step 12:
3380 divided by 419 is 8 with a remainder of 28.
The number 8 becomes the next digit in our result. 
Result so far: 33278.4988
Deduct 3352 from 3380 and we're left with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Our division results in 33278.4988 with a remaining 0.00028.