34863449 ÷ 639 
The aim is to understand the frequency of 639 in 34863449.

Step 1:
3 divided by 639 is 0 with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Append the next digit (4) from the dividend to 3 and continue with: 34 / 639

Step 2:
If we divide 34 by 639, we get 0 and a remainder of 34.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 34 and we're left with 34.
Include the next digit (8) from the dividend after 34, then repeat: 348 / 639

Step 3:
When dividing 348 by 639, we get 0 with a remainder of 348.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 348 to get 348.
Bring next digit (6) of the dividend behind the 348 and repeat the process: 3486 / 639

Going ahead to step 4:
The number 639 fits into 3486 5 times, leaving a remainder of 291.
The next digit of our result is 5. 
Result so far: 5.0
Subtract 3195 from 3486 to get 291.
Take the next digit (3) from the dividend and append it to 291, then repeat: 2913 / 639

On to step 5:
The number 639 fits into 2913 4 times, leaving a remainder of 357.
Put 4 as the next digit of the answer. 
Result so far: 54.0
The remainder is 357 after subtracting 2556 from 2913.
Take the next digit (4) from the dividend and append it to 357, then repeat: 3574 / 639

Let's proceed to step 6:
When dividing 3574 by 639, we get 5 with a remainder of 379.
The next digit of our result is 5. 
Result so far: 545.0
The remainder is 379 after subtracting 3195 from 3574.
Grab the next digit (4) from the dividend, add it to 379, then carry on: 3794 / 639

Advancing to step 7:
When dividing 3794 by 639, we get 5 with a remainder of 599.
Record the quotient 5 as the next digit in the result. 
Result so far: 5455.0
If we subtract 3195 from 3794, we get 599.
Include the next digit (9) from the dividend after 599, then repeat: 5999 / 639

Advancing to step 8:
If we divide 5999 by 639, we get 9 and a remainder of 248.
Use 9 as the next digit of our solution. 
Result so far: 54559.0
Deduct 5751 from 5999 and we're left with 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

On to step 9:
When dividing 2480 by 639, we get 3 with a remainder of 563.
Write down 3 as next digit of the result. 
Result so far: 54559.3
If we subtract 1917 from 2480, we get 563.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5630, and continue the process.

Step 10:
When dividing 5630 by 639, we get 8 with a remainder of 518.
Put 8 as the next digit of the answer. 
Result so far: 54559.38
The remainder is 518 after subtracting 5112 from 5630.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5180, and continue the process.

Going ahead to step 11:
The number 639 fits into 5180 8 times, leaving a remainder of 68.
Write down 8 as next digit of the result. 
Result so far: 54559.388
Subtract 5112 from 5180 to get 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

The quotient of the division is 54559.388, and the remainder is 0.0068.