386449 ÷ 49 
The aim is to understand the frequency of 49 in 386449.

Step 1:
If we divide 3 by 49, we get 0 and a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Include the next digit (8) from the dividend after 3, then repeat: 38 / 49

Advancing to step 2:
38 divided by 49 is 0 with a remainder of 38.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 38 after subtracting 0 from 38.
Grab the next digit (6) from the dividend, add it to 38, then carry on: 386 / 49

Let's proceed to step 3:
When dividing 386 by 49, we get 7 with a remainder of 43.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
Subtract 343 from 386 to get 43.
Take the next digit (4) from the dividend and append it to 43, then repeat: 434 / 49

Let's proceed to step 4:
The number 49 fits into 434 8 times, leaving a remainder of 42.
Record the quotient 8 as the next digit in the result. 
Result so far: 78.0
Subtracting 392 from 434 leaves us with 42.
Append the next digit (4) from the dividend to 42 and continue with: 424 / 49

Going ahead to step 5:
49 can be fit into 424 8 times, resulting in a remainder of 32.
Put 8 as the next digit of the answer. 
Result so far: 788.0
If we subtract 392 from 424, we get 32.
Grab the next digit (9) from the dividend, add it to 32, then carry on: 329 / 49

Step 6:
When dividing 329 by 49, we get 6 with a remainder of 35.
Use 6 as the next digit of our solution. 
Result so far: 7886.0
If we subtract 294 from 329, we get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Moving on to step 7:
If we divide 350 by 49, we get 7 and a remainder of 7.
The number 7 becomes the next digit in our result. 
Result so far: 7886.7
The remainder is 7 after subtracting 343 from 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Let's proceed to step 8:
49 goes into 70 1 times with a remainder of 21.
Record the quotient 1 as the next digit in the result. 
Result so far: 7886.71
Deduct 49 from 70 and we're left with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Let's proceed to step 9:
The number 49 fits into 210 4 times, leaving a remainder of 14.
Put 4 as the next digit of the answer. 
Result so far: 7886.714
Subtract 196 from 210 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 10:
49 can be fit into 140 2 times, resulting in a remainder of 42.
Write down 2 as next digit of the result. 
Result so far: 7886.7142
If we subtract 98 from 140, we get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Advancing to step 11:
If we divide 420 by 49, we get 8 and a remainder of 28.
The next digit of our result is 8. 
Result so far: 7886.71428
If we subtract 392 from 420, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Let's proceed to step 12:
49 goes into 280 5 times with a remainder of 35.
Write down 5 as next digit of the result. 
Result so far: 7886.714285
The remainder is 35 after subtracting 245 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Step 13:
When dividing 350 by 49, we get 7 with a remainder of 7.
The next digit of our result is 7. 
Result so far: 7886.7142857
If we subtract 343 from 350, we get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

On to step 14:
70 divided by 49 is 1 with a remainder of 21.
Put 1 as the next digit of the answer. 
Result so far: 7886.71428571
If we take 49 away from 70, we end up with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

The final outcome is 7886.71428571, with a leftover of 2.1e-08.