Let's divide 2801639 by 550
The aim is to understand the frequency of 550 in 2801639.

Advancing to step 1:
550 can be fit into 2 0 times, resulting in a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Include the next digit (8) from the dividend after 2, then repeat: 28 / 550

Advancing to step 2:
28 divided by 550 is 0 with a remainder of 28.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 28 after subtracting 0 from 28.
Grab the next digit (0) from the dividend, add it to 28, then carry on: 280 / 550

Advancing to step 3:
550 goes into 280 0 times with a remainder of 280.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 280 after subtracting 0 from 280.
Include the next digit (1) from the dividend after 280, then repeat: 2801 / 550

Advancing to step 4:
If we divide 2801 by 550, we get 5 and a remainder of 51.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
The remainder is 51 after subtracting 2750 from 2801.
Grab the next digit (6) from the dividend, add it to 51, then carry on: 516 / 550

On to step 5:
550 goes into 516 0 times with a remainder of 516.
Use 0 as the next digit of our solution. 
Result so far: 50.0
Subtract 0 from 516 to get 516.
Bring next digit (3) of the dividend behind the 516 and repeat the process: 5163 / 550

Advancing to step 6:
550 can be fit into 5163 9 times, resulting in a remainder of 213.
Use 9 as the next digit of our solution. 
Result so far: 509.0
The remainder is 213 after subtracting 4950 from 5163.
Include the next digit (9) from the dividend after 213, then repeat: 2139 / 550

Advancing to step 7:
550 goes into 2139 3 times with a remainder of 489.
The number 3 becomes the next digit in our result. 
Result so far: 5093.0
Deduct 1650 from 2139 and we're left with 489.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4890, and continue the process.

Going ahead to step 8:
4890 divided by 550 is 8 with a remainder of 490.
Put 8 as the next digit of the answer. 
Result so far: 5093.8
Deduct 4400 from 4890 and we're left with 490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4900, and continue the process.

Going ahead to step 9:
When dividing 4900 by 550, we get 8 with a remainder of 500.
Use 8 as the next digit of our solution. 
Result so far: 5093.88
Deduct 4400 from 4900 and we're left with 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

The final outcome is 5093.88, with a leftover of 0.5.