Let's divide 45570784 by 639
The aim is to understand the frequency of 639 in 45570784.

Let's proceed to step 1:
The number 639 fits into 4 0 times, leaving a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Grab the next digit (5) from the dividend, add it to 4, then carry on: 45 / 639

Step 2:
639 goes into 45 0 times with a remainder of 45.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 45 and we're left with 45.
Include the next digit (5) from the dividend after 45, then repeat: 455 / 639

Step 3:
639 goes into 455 0 times with a remainder of 455.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 455 and we're left with 455.
Include the next digit (7) from the dividend after 455, then repeat: 4557 / 639

Advancing to step 4:
4557 divided by 639 is 7 with a remainder of 84.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
If we subtract 4473 from 4557, we get 84.
Append the next digit (0) from the dividend to 84 and continue with: 840 / 639

Moving on to step 5:
The number 639 fits into 840 1 times, leaving a remainder of 201.
Put 1 as the next digit of the answer. 
Result so far: 71.0
If we subtract 639 from 840, we get 201.
Append the next digit (7) from the dividend to 201 and continue with: 2017 / 639

Advancing to step 6:
If we divide 2017 by 639, we get 3 and a remainder of 100.
The number 3 becomes the next digit in our result. 
Result so far: 713.0
The remainder is 100 after subtracting 1917 from 2017.
Take the next digit (8) from the dividend and append it to 100, then repeat: 1008 / 639

On to step 7:
639 goes into 1008 1 times with a remainder of 369.
The number 1 becomes the next digit in our result. 
Result so far: 7131.0
If we take 639 away from 1008, we end up with 369.
Fetch the next digit (4) from the dividend, attach it to 369 and continue: 3694 / 639

Let's proceed to step 8:
The number 639 fits into 3694 5 times, leaving a remainder of 499.
Write down 5 as next digit of the result. 
Result so far: 71315.0
Subtracting 3195 from 3694 leaves us with 499.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4990, and continue the process.

On to step 9:
639 goes into 4990 7 times with a remainder of 517.
Write down 7 as next digit of the result. 
Result so far: 71315.7
If we take 4473 away from 4990, we end up with 517.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5170, and continue the process.

Step 10:
639 can be fit into 5170 8 times, resulting in a remainder of 58.
Write down 8 as next digit of the result. 
Result so far: 71315.78
The remainder is 58 after subtracting 5112 from 5170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

On to step 11:
If we divide 580 by 639, we get 0 and a remainder of 580.
The next digit of our result is 0. 
Result so far: 71315.78
The remainder is 580 after subtracting 0 from 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5800, and continue the process.

Step 12:
If we divide 5800 by 639, we get 9 and a remainder of 49.
Write down 9 as next digit of the result. 
Result so far: 71315.7809
The remainder is 49 after subtracting 5751 from 5800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Step 13:
The number 639 fits into 490 0 times, leaving a remainder of 490.
Record the quotient 0 as the next digit in the result. 
Result so far: 71315.7809
The remainder is 490 after subtracting 0 from 490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4900, and continue the process.

On to step 14:
639 goes into 4900 7 times with a remainder of 427.
Put 7 as the next digit of the answer. 
Result so far: 71315.780907
If we subtract 4473 from 4900, we get 427.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4270, and continue the process.

Advancing to step 15:
The number 639 fits into 4270 6 times, leaving a remainder of 436.
Write down 6 as next digit of the result. 
Result so far: 71315.7809076
The remainder is 436 after subtracting 3834 from 4270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4360, and continue the process.

Let's proceed to step 16:
639 can be fit into 4360 6 times, resulting in a remainder of 526.
Put 6 as the next digit of the answer. 
Result so far: 71315.78090766
If we subtract 3834 from 4360, we get 526.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5260, and continue the process.

The final result is 71315.78090766 with a remainder of 5.26e-07.