We divide 1880033 by 639
The aim is to understand the frequency of 639 in 1880033.

Moving on to step 1:
When dividing 1 by 639, we get 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Bring next digit (8) of the dividend behind the 1 and repeat the process: 18 / 639

Moving on to step 2:
If we divide 18 by 639, we get 0 and a remainder of 18.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 18 and we're left with 18.
Grab the next digit (8) from the dividend, add it to 18, then carry on: 188 / 639

Advancing to step 3:
639 goes into 188 0 times with a remainder of 188.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 188 after subtracting 0 from 188.
Grab the next digit (0) from the dividend, add it to 188, then carry on: 1880 / 639

Going ahead to step 4:
The number 639 fits into 1880 2 times, leaving a remainder of 602.
The next digit of our result is 2. 
Result so far: 2.0
If we subtract 1278 from 1880, we get 602.
Fetch the next digit (0) from the dividend, attach it to 602 and continue: 6020 / 639

On to step 5:
If we divide 6020 by 639, we get 9 and a remainder of 269.
Record the quotient 9 as the next digit in the result. 
Result so far: 29.0
The remainder is 269 after subtracting 5751 from 6020.
Grab the next digit (3) from the dividend, add it to 269, then carry on: 2693 / 639

Going ahead to step 6:
639 goes into 2693 4 times with a remainder of 137.
Put 4 as the next digit of the answer. 
Result so far: 294.0
Deduct 2556 from 2693 and we're left with 137.
Include the next digit (3) from the dividend after 137, then repeat: 1373 / 639

Going ahead to step 7:
639 can be fit into 1373 2 times, resulting in a remainder of 95.
The next digit of our result is 2. 
Result so far: 2942.0
Subtracting 1278 from 1373 leaves us with 95.
Since there are no more digits in the dividend, we add a zero to the remainder making it 950, and continue the process.

Let's proceed to step 8:
The number 639 fits into 950 1 times, leaving a remainder of 311.
Put 1 as the next digit of the answer. 
Result so far: 2942.1
Subtract 639 from 950 to get 311.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3110, and continue the process.

Advancing to step 9:
3110 divided by 639 is 4 with a remainder of 554.
Record the quotient 4 as the next digit in the result. 
Result so far: 2942.14
If we take 2556 away from 3110, we end up with 554.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5540, and continue the process.

On to step 10:
The number 639 fits into 5540 8 times, leaving a remainder of 428.
Use 8 as the next digit of our solution. 
Result so far: 2942.148
If we take 5112 away from 5540, we end up with 428.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4280, and continue the process.

Moving on to step 11:
639 goes into 4280 6 times with a remainder of 446.
Put 6 as the next digit of the answer. 
Result so far: 2942.1486
The remainder is 446 after subtracting 3834 from 4280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4460, and continue the process.

Step 12:
When dividing 4460 by 639, we get 6 with a remainder of 626.
Record the quotient 6 as the next digit in the result. 
Result so far: 2942.14866
Subtracting 3834 from 4460 leaves us with 626.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6260, and continue the process.

The quotient of the division is 2942.14866, and the remainder is 0.000626.