We divide 83679180 by 280
The aim is to understand the frequency of 280 in 83679180.

On to step 1:
280 can be fit into 8 0 times, resulting in a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Grab the next digit (3) from the dividend, add it to 8, then carry on: 83 / 280

Moving on to step 2:
280 goes into 83 0 times with a remainder of 83.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 83 after subtracting 0 from 83.
Take the next digit (6) from the dividend and append it to 83, then repeat: 836 / 280

Moving on to step 3:
When dividing 836 by 280, we get 2 with a remainder of 276.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
The remainder is 276 after subtracting 560 from 836.
Fetch the next digit (7) from the dividend, attach it to 276 and continue: 2767 / 280

Step 4:
If we divide 2767 by 280, we get 9 and a remainder of 247.
The next digit of our result is 9. 
Result so far: 29.0
Deduct 2520 from 2767 and we're left with 247.
Take the next digit (9) from the dividend and append it to 247, then repeat: 2479 / 280

Step 5:
2479 divided by 280 is 8 with a remainder of 239.
Record the quotient 8 as the next digit in the result. 
Result so far: 298.0
If we subtract 2240 from 2479, we get 239.
Fetch the next digit (1) from the dividend, attach it to 239 and continue: 2391 / 280

Let's proceed to step 6:
2391 divided by 280 is 8 with a remainder of 151.
The number 8 becomes the next digit in our result. 
Result so far: 2988.0
If we take 2240 away from 2391, we end up with 151.
Take the next digit (8) from the dividend and append it to 151, then repeat: 1518 / 280

Moving on to step 7:
The number 280 fits into 1518 5 times, leaving a remainder of 118.
Write down 5 as next digit of the result. 
Result so far: 29885.0
Deduct 1400 from 1518 and we're left with 118.
Bring next digit (0) of the dividend behind the 118 and repeat the process: 1180 / 280

Let's proceed to step 8:
The number 280 fits into 1180 4 times, leaving a remainder of 60.
The number 4 becomes the next digit in our result. 
Result so far: 298854.0
If we take 1120 away from 1180, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 9:
600 divided by 280 is 2 with a remainder of 40.
Write down 2 as next digit of the result. 
Result so far: 298854.2
The remainder is 40 after subtracting 560 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 10:
400 divided by 280 is 1 with a remainder of 120.
The next digit of our result is 1. 
Result so far: 298854.21
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.

Step 11:
The number 280 fits into 1200 4 times, leaving a remainder of 80.
The next digit of our result is 4. 
Result so far: 298854.214
Deduct 1120 from 1200 and we're left 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.

Advancing to step 12:
The number 280 fits into 800 2 times, leaving a remainder of 240.
Record the quotient 2 as the next digit in the result. 
Result so far: 298854.2142
Subtracting 560 from 800 leaves us 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.

Going ahead to step 13:
If we divide 2400 by 280, we get 8 and a remainder of 160.
The next digit of our result is 8. 
Result so far: 298854.21428
If we take 2240 away from 2400, we end up 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 14:
The number 280 fits into 1600 5 times, leaving a remainder of 200.
Record the quotient 5 as the next digit in the result. 
Result so far: 298854.214285
If we subtract 1400 from 1600, we 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.

Advancing to step 15:
280 goes into 2000 7 times with a remainder of 40.
Use 7 as the next digit of our solution. 
Result so far: 298854.2142857
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.

On to step 16:
If we divide 400 by 280, we get 1 and a remainder of 120.
Record the quotient 1 as the next digit in the result. 
Result so far: 298854.21428571
Deduct 280 from 400 and we're left 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.

The final result is 298854.21428571 with a remainder of 1.2e-07.