670172 ÷ 49 
The aim is to understand the frequency of 49 in 670172.

Step 1:
When dividing 6 by 49, we get 0 with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Take the next digit (7) from the dividend and append it to 6, then repeat: 67 / 49

On to step 2:
The number 49 fits into 67 1 times, leaving a remainder of 18.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 49 from 67, we get 18.
Take the next digit (0) from the dividend and append it to 18, then repeat: 180 / 49

Step 3:
180 divided by 49 is 3 with a remainder of 33.
The next digit of our result is 3. 
Result so far: 13.0
Subtract 147 from 180 to get 33.
Take the next digit (1) from the dividend and append it to 33, then repeat: 331 / 49

Going ahead to step 4:
If we divide 331 by 49, we get 6 and a remainder of 37.
The number 6 becomes the next digit in our result. 
Result so far: 136.0
If we take 294 away from 331, we end up with 37.
Include the next digit (7) from the dividend after 37, then repeat: 377 / 49

Going ahead to step 5:
377 divided by 49 is 7 with a remainder of 34.
The next digit of our result is 7. 
Result so far: 1367.0
Subtract 343 from 377 to get 34.
Bring next digit (2) of the dividend behind the 34 and repeat the process: 342 / 49

Step 6:
342 divided by 49 is 6 with a remainder of 48.
Record the quotient 6 as the next digit in the result. 
Result so far: 13676.0
Subtracting 294 from 342 leaves us with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Moving on to step 7:
When dividing 480 by 49, we get 9 with a remainder of 39.
The next digit of our result is 9. 
Result so far: 13676.9
The remainder is 39 after subtracting 441 from 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Moving on to step 8:
49 goes into 390 7 times with a remainder of 47.
Write down 7 as next digit of the result. 
Result so far: 13676.97
The remainder is 47 after subtracting 343 from 390.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Step 9:
49 can be fit into 470 9 times, resulting in a remainder of 29.
The number 9 becomes the next digit in our result. 
Result so far: 13676.979
Subtract 441 from 470 to 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 10:
The number 49 fits into 290 5 times, leaving a remainder of 45.
The next digit of our result is 5. 
Result so far: 13676.9795
Deduct 245 from 290 and we're left 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.

Advancing to step 11:
49 can be fit into 450 9 times, resulting in a remainder of 9.
Record the quotient 9 as the next digit in the result. 
Result so far: 13676.97959
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 12:
If we divide 90 by 49, we get 1 and a remainder of 41.
The next digit of our result is 1. 
Result so far: 13676.979591
Subtracting 49 from 90 leaves us 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.

Advancing to step 13:
49 can be fit into 410 8 times, resulting in a remainder of 18.
Put 8 as the next digit of the answer. 
Result so far: 13676.9795918
The remainder is 18 after subtracting 392 from 410.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 14:
180 divided by 49 is 3 with a remainder of 33.
Use 3 as the next digit of our solution. 
Result so far: 13676.97959183
If we subtract 147 from 180, we get 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

The final outcome is 13676.97959183, with a leftover of 3.3e-08.