85963063 divided by 280 
The aim is to understand the frequency of 280 in 85963063.

Let's proceed to step 1:
8 divided by 280 is 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Append the next digit (5) from the dividend to 8 and continue with: 85 / 280

On to step 2:
85 divided by 280 is 0 with a remainder of 85.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 85, we get 85.
Fetch the next digit (9) from the dividend, attach it to 85 and continue: 859 / 280

Going ahead to step 3:
The number 280 fits into 859 3 times, leaving a remainder of 19.
Write down 3 as next digit of the result. 
Result so far: 3.0
If we take 840 away from 859, we end up with 19.
Grab the next digit (6) from the dividend, add it to 19, then carry on: 196 / 280

Going ahead to step 4:
When dividing 196 by 280, we get 0 with a remainder of 196.
Write down 0 as next digit of the result. 
Result so far: 30.0
Subtracting 0 from 196 leaves us with 196.
Fetch the next digit (3) from the dividend, attach it to 196 and continue: 1963 / 280

Going ahead to step 5:
280 goes into 1963 7 times with a remainder of 3.
Record the quotient 7 as the next digit in the result. 
Result so far: 307.0
Subtract 1960 from 1963 to get 3.
Include the next digit (0) from the dividend after 3, then repeat: 30 / 280

Going ahead to step 6:
When dividing 30 by 280, we get 0 with a remainder of 30.
The next digit of our result is 0. 
Result so far: 3070.0
If we subtract 0 from 30, we get 30.
Fetch the next digit (6) from the dividend, attach it to 30 and continue: 306 / 280

Advancing to step 7:
If we divide 306 by 280, we get 1 and a remainder of 26.
Write down 1 as next digit of the result. 
Result so far: 30701.0
Subtract 280 from 306 to get 26.
Grab the next digit (3) from the dividend, add it to 26, then carry on: 263 / 280

Let's proceed to step 8:
280 goes into 263 0 times with a remainder of 263.
Put 0 as the next digit of the answer. 
Result so far: 307010.0
Deduct 0 from 263 and we're left with 263.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2630, and continue the process.

Going ahead to step 9:
280 goes into 2630 9 times with a remainder of 110.
Record the quotient 9 as the next digit in the result. 
Result so far: 307010.9
Subtract 2520 from 2630 to get 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Advancing to step 10:
The number 280 fits into 1100 3 times, leaving a remainder of 260.
The next digit of our result is 3. 
Result so far: 307010.93
Subtracting 840 from 1100 leaves us with 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Advancing to step 11:
When dividing 2600 by 280, we get 9 with a remainder of 80.
Write down 9 as next digit of the result. 
Result so far: 307010.939
Deduct 2520 from 2600 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:
If we divide 800 by 280, we get 2 and a remainder of 240.
Record the quotient 2 as the next digit in the result. 
Result so far: 307010.9392
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.

On to step 13:
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: 307010.93928
The remainder is 160 after subtracting 2240 from 2400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Advancing to step 14:
When dividing 1600 by 280, we get 5 with a remainder of 200.
Use 5 as the next digit of our solution. 
Result so far: 307010.939285
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.

On to step 15:
2000 divided by 280 is 7 with a remainder of 40.
The next digit of our result is 7. 
Result so far: 307010.9392857
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.

Step 16:
280 goes into 400 1 times with a remainder of 120.
Put 1 as the next digit of the answer. 
Result so far: 307010.93928571
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.

After the division, we end up with 307010.93928571 and a remainder of 1.2e-07.