We look at the division of 628988 by 49 
The aim is to understand the frequency of 49 in 628988.

On to step 1:
49 can be fit into 6 0 times, resulting in a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Bring next digit (2) of the dividend behind the 6 and repeat the process: 62 / 49

Advancing to step 2:
49 goes into 62 1 times with a remainder of 13.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 13 after subtracting 49 from 62.
Fetch the next digit (8) from the dividend, attach it to 13 and continue: 138 / 49

On to step 3:
49 can be fit into 138 2 times, resulting in a remainder of 40.
Write down 2 as next digit of the result. 
Result so far: 12.0
If we take 98 away from 138, we end up with 40.
Append the next digit (9) from the dividend to 40 and continue with: 409 / 49

On to step 4:
409 divided by 49 is 8 with a remainder of 17.
The number 8 becomes the next digit in our result. 
Result so far: 128.0
Deduct 392 from 409 and we're left with 17.
Include the next digit (8) from the dividend after 17, then repeat: 178 / 49

Let's proceed to step 5:
If we divide 178 by 49, we get 3 and a remainder of 31.
Put 3 as the next digit of the answer. 
Result so far: 1283.0
Subtract 147 from 178 to get 31.
Fetch the next digit (8) from the dividend, attach it to 31 and continue: 318 / 49

Advancing to step 6:
318 divided by 49 is 6 with a remainder of 24.
Put 6 as the next digit of the answer. 
Result so far: 12836.0
If we subtract 294 from 318, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Going ahead to step 7:
If we divide 240 by 49, we get 4 and a remainder of 44.
Use 4 as the next digit of our solution. 
Result so far: 12836.4
Deduct 196 from 240 and we're left with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Going ahead to step 8:
If we divide 440 by 49, we get 8 and a remainder of 48.
Put 8 as the next digit of the answer. 
Result so far: 12836.48
Subtract 392 from 440 to get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Step 9:
The number 49 fits into 480 9 times, leaving a remainder of 39.
Put 9 as the next digit of the answer. 
Result so far: 12836.489
Deduct 441 from 480 and we're left with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Advancing to step 10:
The number 49 fits into 390 7 times, leaving a remainder of 47.
The next digit of our result is 7. 
Result so far: 12836.4897
If we subtract 343 from 390, we get 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

On to step 11:
When dividing 470 by 49, we get 9 with a remainder of 29.
Record the quotient 9 as the next digit in the result. 
Result so far: 12836.48979
If we subtract 441 from 470, we get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Moving on to step 12:
49 goes into 290 5 times with a remainder of 45.
Put 5 as the next digit of the answer. 
Result so far: 12836.489795
If we take 245 away from 290, we end up with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Step 13:
450 divided by 49 is 9 with a remainder of 9.
The number 9 becomes the next digit in our result. 
Result so far: 12836.4897959
If we subtract 441 from 450, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 14:
49 can be fit into 90 1 times, resulting in a remainder of 41.
Use 1 as the next digit of our solution. 
Result so far: 12836.48979591
If we take 49 away from 90, we end up with 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

The final result is 12836.48979591 with a remainder of 4.1e-08.