99560361 divided by 280 
The aim is to understand the frequency of 280 in 99560361.

On to step 1:
280 can be fit into 9 0 times, resulting in a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Append the next digit (9) from the dividend to 9 and continue with: 99 / 280

Moving on to step 2:
99 divided by 280 is 0 with a remainder of 99.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 99 leaves us with 99.
Append the next digit (5) from the dividend to 99 and continue with: 995 / 280

Advancing to step 3:
280 goes into 995 3 times with a remainder of 155.
The next digit of our result is 3. 
Result so far: 3.0
Subtracting 840 from 995 leaves us with 155.
Fetch the next digit (6) from the dividend, attach it to 155 and continue: 1556 / 280

Going ahead to step 4:
If we divide 1556 by 280, we get 5 and a remainder of 156.
Record the quotient 5 as the next digit in the result. 
Result so far: 35.0
If we take 1400 away from 1556, we end up with 156.
Fetch the next digit (0) from the dividend, attach it to 156 and continue: 1560 / 280

Going ahead to step 5:
If we divide 1560 by 280, we get 5 and a remainder of 160.
Put 5 as the next digit of the answer. 
Result so far: 355.0
The remainder is 160 after subtracting 1400 from 1560.
Fetch the next digit (3) from the dividend, attach it to 160 and continue: 1603 / 280

Advancing to step 6:
280 can be fit into 1603 5 times, resulting in a remainder of 203.
The next digit of our result is 5. 
Result so far: 3555.0
If we subtract 1400 from 1603, we get 203.
Take the next digit (6) from the dividend and append it to 203, then repeat: 2036 / 280

On to step 7:
2036 divided by 280 is 7 with a remainder of 76.
Record the quotient 7 as the next digit in the result. 
Result so far: 35557.0
Deduct 1960 from 2036 and we're left with 76.
Bring next digit (1) of the dividend behind the 76 and repeat the process: 761 / 280

Step 8:
280 can be fit into 761 2 times, resulting in a remainder of 201.
Use 2 as the next digit of our solution. 
Result so far: 355572.0
The remainder is 201 after subtracting 560 from 761.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2010, and continue the process.

Let's proceed to step 9:
280 can be fit into 2010 7 times, resulting in a remainder of 50.
Use 7 as the next digit of our solution. 
Result so far: 355572.7
If we take 1960 away from 2010, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Step 10:
280 goes into 500 1 times with a remainder of 220.
The number 1 becomes the next digit in our result. 
Result so far: 355572.71
Subtracting 280 from 500 leaves us with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Going ahead to step 11:
The number 280 fits into 2200 7 times, leaving a remainder of 240.
Record the quotient 7 as the next digit in the result. 
Result so far: 355572.717
Deduct 1960 from 2200 and we're left with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

On to step 12:
280 goes into 2400 8 times with a remainder of 160.
Write down 8 as next digit of the result. 
Result so far: 355572.7178
Deduct 2240 from 2400 and we're left 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.

On to step 13:
If we divide 1600 by 280, we get 5 and a remainder of 200.
Use 5 as the next digit of our solution. 
Result so far: 355572.71785
Deduct 1400 from 1600 and we're left with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Advancing to step 14:
280 can be fit into 2000 7 times, resulting in a remainder of 40.
The next digit of our result is 7. 
Result so far: 355572.717857
If we subtract 1960 from 2000, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 15:
The number 280 fits into 400 1 times, leaving a remainder of 120.
Use 1 as the next digit of our solution. 
Result so far: 355572.7178571
Subtract 280 from 400 to get 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Let's proceed to step 16:
1200 divided by 280 is 4 with a remainder of 80.
The next digit of our result is 4. 
Result so far: 355572.71785714
The remainder is 80 after subtracting 1120 from 1200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Our division results in 355572.71785714 with a remaining 8e-08.