We're dividing 669643 by 49 
The aim is to understand the frequency of 49 in 669643.

On to step 1:
When dividing 6 by 49, we get 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 49

Moving on to step 2:
The number 49 fits into 66 1 times, leaving a remainder of 17.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 49 from 66, we get 17.
Take the next digit (9) from the dividend and append it to 17, then repeat: 179 / 49

Let's proceed to step 3:
49 goes into 179 3 times with a remainder of 32.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
Deduct 147 from 179 and we're left with 32.
Fetch the next digit (6) from the dividend, attach it to 32 and continue: 326 / 49

Moving on to step 4:
When dividing 326 by 49, we get 6 with a remainder of 32.
The number 6 becomes the next digit in our result. 
Result so far: 136.0
If we subtract 294 from 326, we get 32.
Bring next digit (4) of the dividend behind the 32 and repeat the process: 324 / 49

Moving on to step 5:
If we divide 324 by 49, we get 6 and a remainder of 30.
The next digit of our result is 6. 
Result so far: 1366.0
If we subtract 294 from 324, we get 30.
Fetch the next digit (3) from the dividend, attach it to 30 and continue: 303 / 49

Step 6:
303 divided by 49 is 6 with a remainder of 9.
Record the quotient 6 as the next digit in the result. 
Result so far: 13666.0
Subtracting 294 from 303 leaves us with 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 7:
The number 49 fits into 90 1 times, leaving a remainder of 41.
Put 1 as the next digit of the answer. 
Result so far: 13666.1
Subtract 49 from 90 to get 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Step 8:
49 can be fit into 410 8 times, resulting in a remainder of 18.
Use 8 as the next digit of our solution. 
Result so far: 13666.18
If we subtract 392 from 410, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 9:
When dividing 180 by 49, we get 3 with a remainder of 33.
Use 3 as the next digit of our solution. 
Result so far: 13666.183
The remainder is 33 after subtracting 147 from 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Let's proceed to step 10:
49 goes into 330 6 times with a remainder of 36.
Put 6 as the next digit of the answer. 
Result so far: 13666.1836
Deduct 294 from 330 and we're left with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

On to step 11:
When dividing 360 by 49, we get 7 with a remainder of 17.
The number 7 becomes the next digit in our result. 
Result so far: 13666.18367
The remainder is 17 after subtracting 343 from 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Step 12:
170 divided by 49 is 3 with a remainder of 23.
The number 3 becomes the next digit in our result. 
Result so far: 13666.183673
Subtracting 147 from 170 leaves us 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.

Step 13:
49 can be fit into 230 4 times, resulting in a remainder of 34.
Put 4 as the next digit of the answer. 
Result so far: 13666.1836734
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.

Let's proceed to step 14:
49 can be fit into 340 6 times, resulting in a remainder of 46.
Use 6 as the next digit of our solution. 
Result so far: 13666.18367346
If we take 294 away from 340, we end up with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

In conclusion, the division gives 13666.18367346 with a balance of 4.6e-08.