Let's divide 34256021 by 280
The aim is to understand the frequency of 280 in 34256021.

On to step 1:
280 can be fit into 3 0 times, resulting in a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Fetch the next digit (4) from the dividend, attach it to 3 and continue: 34 / 280

Moving on to step 2:
34 divided by 280 is 0 with a remainder of 34.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 34 after subtracting 0 from 34.
Grab the next digit (2) from the dividend, add it to 34, then carry on: 342 / 280

Moving on to step 3:
The number 280 fits into 342 1 times, leaving a remainder of 62.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 280 away from 342, we end up with 62.
Append the next digit (5) from the dividend to 62 and continue with: 625 / 280

Advancing to step 4:
280 goes into 625 2 times with a remainder of 65.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
Subtracting 560 from 625 leaves us with 65.
Take the next digit (6) from the dividend and append it to 65, then repeat: 656 / 280

Step 5:
If we divide 656 by 280, we get 2 and a remainder of 96.
The next digit of our result is 2. 
Result so far: 122.0
Subtract 560 from 656 to get 96.
Append the next digit (0) from the dividend to 96 and continue with: 960 / 280

Advancing to step 6:
280 can be fit into 960 3 times, resulting in a remainder of 120.
The number 3 becomes the next digit in our result. 
Result so far: 1223.0
If we take 840 away from 960, we end up with 120.
Fetch the next digit (2) from the dividend, attach it to 120 and continue: 1202 / 280

Let's proceed to step 7:
The number 280 fits into 1202 4 times, leaving a remainder of 82.
Write down 4 as next digit of the result. 
Result so far: 12234.0
The remainder is 82 after subtracting 1120 from 1202.
Bring next digit (1) of the dividend behind the 82 and repeat the process: 821 / 280

On to step 8:
280 goes into 821 2 times with a remainder of 261.
Write down 2 as next digit of the result. 
Result so far: 122342.0
The remainder is 261 after subtracting 560 from 821.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2610, and continue the process.

Step 9:
The number 280 fits into 2610 9 times, leaving a remainder of 90.
Put 9 as the next digit of the answer. 
Result so far: 122342.9
Subtract 2520 from 2610 to get 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

On to step 10:
900 divided by 280 is 3 with a remainder of 60.
Record the quotient 3 as the next digit in the result. 
Result so far: 122342.93
Subtracting 840 from 900 leaves us 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.

On to step 11:
If we divide 600 by 280, we get 2 and a remainder of 40.
Put 2 as the next digit of the answer. 
Result so far: 122342.932
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.

Step 12:
280 can be fit into 400 1 times, resulting in a remainder of 120.
Write down 1 as next digit of the result. 
Result so far: 122342.9321
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.

Step 13:
The number 280 fits into 1200 4 times, leaving a remainder of 80.
Record the quotient 4 as the next digit in the result. 
Result so far: 122342.93214
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.

On to step 14:
280 can be fit into 800 2 times, resulting in a remainder of 240.
The next digit of our result is 2. 
Result so far: 122342.932142
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 15:
If we divide 2400 by 280, we get 8 and a remainder of 160.
Write down 8 as next digit of the result. 
Result so far: 122342.9321428
Subtract 2240 from 2400 to 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 16:
1600 divided by 280 is 5 with a remainder of 200.
Use 5 as the next digit of our solution. 
Result so far: 122342.93214285
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.

The final result is 122342.93214285 with a remainder of 2e-07.