We look at the division of 669572 by 49 
The aim is to understand the frequency of 49 in 669572.

Step 1:
The number 49 fits into 6 0 times, leaving a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Bring next digit (6) of the dividend behind the 6 and repeat the process: 66 / 49

Let's proceed to step 2:
66 divided by 49 is 1 with a remainder of 17.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 49 from 66 and we're left with 17.
Grab the next digit (9) from the dividend, add it to 17, then carry on: 179 / 49

Let's proceed to step 3:
The number 49 fits into 179 3 times, leaving a remainder of 32.
The next digit of our result is 3. 
Result so far: 13.0
If we subtract 147 from 179, we get 32.
Append the next digit (5) from the dividend to 32 and continue with: 325 / 49

Let's proceed to step 4:
325 divided by 49 is 6 with a remainder of 31.
The number 6 becomes the next digit in our result. 
Result so far: 136.0
If we take 294 away from 325, we end up with 31.
Append the next digit (7) from the dividend to 31 and continue with: 317 / 49

Moving on to step 5:
317 divided by 49 is 6 with a remainder of 23.
Write down 6 as next digit of the result. 
Result so far: 1366.0
Deduct 294 from 317 and we're left with 23.
Fetch the next digit (2) from the dividend, attach it to 23 and continue: 232 / 49

Moving on to step 6:
The number 49 fits into 232 4 times, leaving a remainder of 36.
The next digit of our result is 4. 
Result so far: 13664.0
Subtract 196 from 232 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Going ahead to step 7:
49 goes into 360 7 times with a remainder of 17.
Put 7 as the next digit of the answer. 
Result so far: 13664.7
Subtracting 343 from 360 leaves us with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Advancing to step 8:
If we divide 170 by 49, we get 3 and a remainder of 23.
Put 3 as the next digit of the answer. 
Result so far: 13664.73
Deduct 147 from 170 and we're left with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Let's proceed to step 9:
The number 49 fits into 230 4 times, leaving a remainder of 34.
The next digit of our result is 4. 
Result so far: 13664.734
Deduct 196 from 230 and we're left with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

On to step 10:
The number 49 fits into 340 6 times, leaving a remainder of 46.
Write down 6 as next digit of the result. 
Result so far: 13664.7346
If we subtract 294 from 340, we get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Advancing to step 11:
49 goes into 460 9 times with a remainder of 19.
Write down 9 as next digit of the result. 
Result so far: 13664.73469
Deduct 441 from 460 and we're left with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Advancing to step 12:
The number 49 fits into 190 3 times, leaving a remainder of 43.
Record the quotient 3 as the next digit in the result. 
Result so far: 13664.734693
Deduct 147 from 190 and we're left with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

On to step 13:
430 divided by 49 is 8 with a remainder of 38.
Write down 8 as next digit of the result. 
Result so far: 13664.7346938
Deduct 392 from 430 and we're left with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Let's proceed to step 14:
If we divide 380 by 49, we get 7 and a remainder of 37.
Record the quotient 7 as the next digit in the result. 
Result so far: 13664.73469387
The remainder is 37 after subtracting 343 from 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

The final outcome is 13664.73469387, with a leftover of 3.7e-08.