We look at the division of 23359981 by 280 
The aim is to understand the frequency of 280 in 23359981.

Going ahead to step 1:
If we divide 2 by 280, we get 0 and a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Bring next digit (3) of the dividend behind the 2 and repeat the process: 23 / 280

On to step 2:
The number 280 fits into 23 0 times, leaving a remainder of 23.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 23, we end up with 23.
Append the next digit (3) from the dividend to 23 and continue with: 233 / 280

Let's proceed to step 3:
233 divided by 280 is 0 with a remainder of 233.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 233, we get 233.
Fetch the next digit (5) from the dividend, attach it to 233 and continue: 2335 / 280

Let's proceed to step 4:
When dividing 2335 by 280, we get 8 with a remainder of 95.
Write down 8 as next digit of the result. 
Result so far: 8.0
If we subtract 2240 from 2335, we get 95.
Append the next digit (9) from the dividend to 95 and continue with: 959 / 280

Moving on to step 5:
280 can be fit into 959 3 times, resulting in a remainder of 119.
Use 3 as the next digit of our solution. 
Result so far: 83.0
If we subtract 840 from 959, we get 119.
Bring next digit (9) of the dividend behind the 119 and repeat the process: 1199 / 280

Advancing to step 6:
1199 divided by 280 is 4 with a remainder of 79.
Put 4 as the next digit of the answer. 
Result so far: 834.0
If we subtract 1120 from 1199, we get 79.
Include the next digit (8) from the dividend after 79, then repeat: 798 / 280

Let's proceed to step 7:
If we divide 798 by 280, we get 2 and a remainder of 238.
Record the quotient 2 as the next digit in the result. 
Result so far: 8342.0
Subtract 560 from 798 to get 238.
Include the next digit (1) from the dividend after 238, then repeat: 2381 / 280

Advancing to step 8:
2381 divided by 280 is 8 with a remainder of 141.
Record the quotient 8 as the next digit in the result. 
Result so far: 83428.0
If we subtract 2240 from 2381, we get 141.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1410, and continue the process.

Advancing to step 9:
When dividing 1410 by 280, we get 5 with a remainder of 10.
Use 5 as the next digit of our solution. 
Result so far: 83428.5
If we subtract 1400 from 1410, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 10:
When dividing 100 by 280, we get 0 with a remainder of 100.
Write down 0 as next digit of the result. 
Result so far: 83428.5
Deduct 0 from 100 and we're left with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Let's proceed to step 11:
When dividing 1000 by 280, we get 3 with a remainder of 160.
Use 3 as the next digit of our solution. 
Result so far: 83428.503
Subtract 840 from 1000 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.

On to step 12:
280 can be fit into 1600 5 times, resulting in a remainder of 200.
The number 5 becomes the next digit in our result. 
Result so far: 83428.5035
The remainder is 200 after subtracting 1400 from 1600.
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 13:
If we divide 2000 by 280, we get 7 and a remainder of 40.
Put 7 as the next digit of the answer. 
Result so far: 83428.50357
If we take 1960 away from 2000, we end up 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.

Let's proceed to step 14:
If we divide 400 by 280, we get 1 and a remainder of 120.
Write down 1 as next digit of the result. 
Result so far: 83428.503571
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.

Going ahead to step 15:
280 can be fit into 1200 4 times, resulting in a remainder of 80.
The next digit of our result is 4. 
Result so far: 83428.5035714
Subtract 1120 from 1200 to get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Let's proceed to step 16:
800 divided by 280 is 2 with a remainder of 240.
The number 2 becomes the next digit in our result. 
Result so far: 83428.50357142
Deduct 560 from 800 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.

The final outcome is 83428.50357142, with a leftover of 2.4e-07.