18829189 ÷ 640 
The aim is to understand the frequency of 640 in 18829189.

Step 1:
640 can be fit into 1 0 times, resulting in a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Include the next digit (8) from the dividend after 1, then repeat: 18 / 640

Let's proceed to step 2:
If we divide 18 by 640, we get 0 and a remainder of 18.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 18 to get 18.
Bring next digit (8) of the dividend behind the 18 and repeat the process: 188 / 640

Advancing to step 3:
640 goes into 188 0 times with a remainder of 188.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 188 to get 188.
Bring next digit (2) of the dividend behind the 188 and repeat the process: 1882 / 640

On to step 4:
When dividing 1882 by 640, we get 2 with a remainder of 602.
Put 2 as the next digit of the answer. 
Result so far: 2.0
The remainder is 602 after subtracting 1280 from 1882.
Bring next digit (9) of the dividend behind the 602 and repeat the process: 6029 / 640

Let's proceed to step 5:
640 goes into 6029 9 times with a remainder of 269.
Write down 9 as next digit of the result. 
Result so far: 29.0
Deduct 5760 from 6029 and we're left with 269.
Bring next digit (1) of the dividend behind the 269 and repeat the process: 2691 / 640

On to step 6:
If we divide 2691 by 640, we get 4 and a remainder of 131.
Use 4 as the next digit of our solution. 
Result so far: 294.0
Subtract 2560 from 2691 to get 131.
Grab the next digit (8) from the dividend, add it to 131, then carry on: 1318 / 640

On to step 7:
The number 640 fits into 1318 2 times, leaving a remainder of 38.
The number 2 becomes the next digit in our result. 
Result so far: 2942.0
The remainder is 38 after subtracting 1280 from 1318.
Append the next digit (9) from the dividend to 38 and continue with: 389 / 640

Moving on to step 8:
When dividing 389 by 640, we get 0 with a remainder of 389.
Put 0 as the next digit of the answer. 
Result so far: 29420.0
The remainder is 389 after subtracting 0 from 389.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3890, and continue the process.

Let's proceed to step 9:
640 goes into 3890 6 times with a remainder of 50.
Put 6 as the next digit of the answer. 
Result so far: 29420.6
If we subtract 3840 from 3890, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Let's proceed to step 10:
640 can be fit into 500 0 times, resulting in a remainder of 500.
The next digit of our result is 0. 
Result so far: 29420.6
If we subtract 0 from 500, we get 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

Going ahead to step 11:
If we divide 5000 by 640, we get 7 and a remainder of 520.
Record the quotient 7 as the next digit in the result. 
Result so far: 29420.607
If we take 4480 away from 5000, we end up with 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5200, and continue the process.

Let's proceed to step 12:
640 goes into 5200 8 times with a remainder of 80.
The number 8 becomes the next digit in our result. 
Result so far: 29420.6078
The remainder is 80 after subtracting 5120 from 5200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Advancing to step 13:
When dividing 800 by 640, we get 1 with a remainder of 160.
Record the quotient 1 as the next digit in the result. 
Result so far: 29420.60781
Subtracting 640 from 800 leaves us with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Step 14:
When dividing 1600 by 640, we get 2 with a remainder of 320.
Record the quotient 2 as the next digit in the result. 
Result so far: 29420.607812
The remainder is 320 after subtracting 1280 from 1600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Let's proceed to step 15:
The number 640 fits into 3200 5 times, leaving a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 29420.6078125
If we subtract 3200 from 3200, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 16:
0 divided by 640 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 29420.6078125
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 29420.6078125 with a remainder of 0.0.