We're dividing 98939590 by 280 
The aim is to understand the frequency of 280 in 98939590.

Advancing to step 1:
9 divided by 280 is 0 with a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Bring next digit (8) of the dividend behind the 9 and repeat the process: 98 / 280

Let's proceed to step 2:
The number 280 fits into 98 0 times, leaving a remainder of 98.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 98, we end up with 98.
Fetch the next digit (9) from the dividend, attach it to 98 and continue: 989 / 280

On to step 3:
280 goes into 989 3 times with a remainder of 149.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Subtract 840 from 989 to get 149.
Take the next digit (3) from the dividend and append it to 149, then repeat: 1493 / 280

Going ahead to step 4:
1493 divided by 280 is 5 with a remainder of 93.
Use 5 as the next digit of our solution. 
Result so far: 35.0
Subtract 1400 from 1493 to get 93.
Grab the next digit (9) from the dividend, add it to 93, then carry on: 939 / 280

Advancing to step 5:
If we divide 939 by 280, we get 3 and a remainder of 99.
Use 3 as the next digit of our solution. 
Result so far: 353.0
Subtract 840 from 939 to get 99.
Append the next digit (5) from the dividend to 99 and continue with: 995 / 280

On to step 6:
When dividing 995 by 280, we get 3 with a remainder of 155.
The next digit of our result is 3. 
Result so far: 3533.0
Subtract 840 from 995 to get 155.
Take the next digit (9) from the dividend and append it to 155, then repeat: 1559 / 280

Moving on to step 7:
When dividing 1559 by 280, we get 5 with a remainder of 159.
Record the quotient 5 as the next digit in the result. 
Result so far: 35335.0
Subtract 1400 from 1559 to get 159.
Grab the next digit (0) from the dividend, add it to 159, then carry on: 1590 / 280

Going ahead to step 8:
280 can be fit into 1590 5 times, resulting in a remainder of 190.
The number 5 becomes the next digit in our result. 
Result so far: 353355.0
Subtracting 1400 from 1590 leaves us with 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

Let's proceed to step 9:
When dividing 1900 by 280, we get 6 with a remainder of 220.
Write down 6 as next digit of the result. 
Result so far: 353355.6
Subtract 1680 from 1900 to get 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Moving on to step 10:
When dividing 2200 by 280, we get 7 with a remainder of 240.
Put 7 as the next digit of the answer. 
Result so far: 353355.67
If we take 1960 away from 2200, we end up 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.

Step 11:
280 can be fit into 2400 8 times, resulting in a remainder of 160.
The number 8 becomes the next digit in our result. 
Result so far: 353355.678
If we subtract 2240 from 2400, we get 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Moving on to step 12:
If we divide 1600 by 280, we get 5 and a remainder of 200.
Write down 5 as next digit of the result. 
Result so far: 353355.6785
Subtract 1400 from 1600 to get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Moving on to step 13:
When dividing 2000 by 280, we get 7 with a remainder of 40.
The number 7 becomes the next digit in our result. 
Result so far: 353355.67857
Deduct 1960 from 2000 and we're left with 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 14:
280 can be fit into 400 1 times, resulting in a remainder of 120.
Use 1 as the next digit of our solution. 
Result so far: 353355.678571
If we take 280 away from 400, we end up with 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 15:
If we divide 1200 by 280, we get 4 and a remainder of 80.
Use 4 as the next digit of our solution. 
Result so far: 353355.6785714
Subtracting 1120 from 1200 leaves us with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Moving on to step 16:
280 goes into 800 2 times with a remainder of 240.
Write down 2 as next digit of the result. 
Result so far: 353355.67857142
The remainder is 240 after subtracting 560 from 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

The quotient of the division is 353355.67857142, and the remainder is 2.4e-07.