28114889 divided by 639 
The aim is to understand the frequency of 639 in 28114889.

On to step 1:
If we divide 2 by 639, we get 0 and a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Include the next digit (8) from the dividend after 2, then repeat: 28 / 639

Going ahead to step 2:
28 divided by 639 is 0 with a remainder of 28.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 28 and we're left with 28.
Grab the next digit (1) from the dividend, add it to 28, then carry on: 281 / 639

Moving on to step 3:
The number 639 fits into 281 0 times, leaving a remainder of 281.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 281, we end up with 281.
Take the next digit (1) from the dividend and append it to 281, then repeat: 2811 / 639

Advancing to step 4:
639 can be fit into 2811 4 times, resulting in a remainder of 255.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
The remainder is 255 after subtracting 2556 from 2811.
Take the next digit (4) from the dividend and append it to 255, then repeat: 2554 / 639

Moving on to step 5:
639 can be fit into 2554 3 times, resulting in a remainder of 637.
Record the quotient 3 as the next digit in the result. 
Result so far: 43.0
Subtract 1917 from 2554 to get 637.
Take the next digit (8) from the dividend and append it to 637, then repeat: 6378 / 639

Going ahead to step 6:
6378 divided by 639 is 9 with a remainder of 627.
Use 9 as the next digit of our solution. 
Result so far: 439.0
Subtracting 5751 from 6378 leaves us with 627.
Include the next digit (8) from the dividend after 627, then repeat: 6278 / 639

On to step 7:
6278 divided by 639 is 9 with a remainder of 527.
Record the quotient 9 as the next digit in the result. 
Result so far: 4399.0
Subtract 5751 from 6278 to get 527.
Take the next digit (9) from the dividend and append it to 527, then repeat: 5279 / 639

Let's proceed to step 8:
The number 639 fits into 5279 8 times, leaving a remainder of 167.
The number 8 becomes the next digit in our result. 
Result so far: 43998.0
If we subtract 5112 from 5279, we get 167.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1670, and continue the process.

Moving on to step 9:
If we divide 1670 by 639, we get 2 and a remainder of 392.
Use 2 as the next digit of our solution. 
Result so far: 43998.2
Subtract 1278 from 1670 to get 392.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

Let's proceed to step 10:
639 goes into 3920 6 times with a remainder of 86.
Record the quotient 6 as the next digit in the result. 
Result so far: 43998.26
The remainder is 86 after subtracting 3834 from 3920.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

On to step 11:
When dividing 860 by 639, we get 1 with a remainder of 221.
Record the quotient 1 as the next digit in the result. 
Result so far: 43998.261
The remainder is 221 after subtracting 639 from 860.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2210, and continue the process.

On to step 12:
2210 divided by 639 is 3 with a remainder of 293.
Record the quotient 3 as the next digit in the result. 
Result so far: 43998.2613
The remainder is 293 after subtracting 1917 from 2210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2930, and continue the process.

Advancing to step 13:
If we divide 2930 by 639, we get 4 and a remainder of 374.
Put 4 as the next digit of the answer. 
Result so far: 43998.26134
The remainder is 374 after subtracting 2556 from 2930.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3740, and continue the process.

Let's proceed to step 14:
3740 divided by 639 is 5 with a remainder of 545.
Record the quotient 5 as the next digit in the result. 
Result so far: 43998.261345
If we subtract 3195 from 3740, we get 545.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5450, and continue the process.

Advancing to step 15:
639 goes into 5450 8 times with a remainder of 338.
Use 8 as the next digit of our solution. 
Result so far: 43998.2613458
Subtracting 5112 from 5450 leaves us with 338.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3380, and continue the process.

Going ahead to step 16:
The number 639 fits into 3380 5 times, leaving a remainder of 185.
Put 5 as the next digit of the answer. 
Result so far: 43998.26134585
Subtract 3195 from 3380 to get 185.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1850, and continue the process.

Our division results in 43998.26134585 with a remaining 1.85e-07.