21965287 ÷ 284 
The aim is to understand the frequency of 284 in 21965287.

Let's proceed to step 1:
284 goes into 2 0 times with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 284

Advancing to step 2:
When dividing 21 by 284, we get 0 with a remainder of 21.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Bring next digit (9) of the dividend behind the 21 and repeat the process: 219 / 284

Going ahead to step 3:
219 divided by 284 is 0 with a remainder of 219.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 219 to get 219.
Take the next digit (6) from the dividend and append it to 219, then repeat: 2196 / 284

On to step 4:
If we divide 2196 by 284, we get 7 and a remainder of 208.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
Subtract 1988 from 2196 to get 208.
Bring next digit (5) of the dividend behind the 208 and repeat the process: 2085 / 284

Advancing to step 5:
When dividing 2085 by 284, we get 7 with a remainder of 97.
Put 7 as the next digit of the answer. 
Result so far: 77.0
The remainder is 97 after subtracting 1988 from 2085.
Grab the next digit (2) from the dividend, add it to 97, then carry on: 972 / 284

Advancing to step 6:
The number 284 fits into 972 3 times, leaving a remainder of 120.
Use 3 as the next digit of our solution. 
Result so far: 773.0
If we subtract 852 from 972, we get 120.
Bring next digit (8) of the dividend behind the 120 and repeat the process: 1208 / 284

Step 7:
When dividing 1208 by 284, we get 4 with a remainder of 72.
Use 4 as the next digit of our solution. 
Result so far: 7734.0
If we subtract 1136 from 1208, we get 72.
Grab the next digit (7) from the dividend, add it to 72, then carry on: 727 / 284

Let's proceed to step 8:
The number 284 fits into 727 2 times, leaving a remainder of 159.
Use 2 as the next digit of our solution. 
Result so far: 77342.0
If we take 568 away from 727, we end up with 159.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1590, and continue the process.

Let's proceed to step 9:
The number 284 fits into 1590 5 times, leaving a remainder of 170.
Use 5 as the next digit of our solution. 
Result so far: 77342.5
Subtract 1420 from 1590 to get 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Let's proceed to step 10:
When dividing 1700 by 284, we get 5 with a remainder of 280.
Put 5 as the next digit of the answer. 
Result so far: 77342.55
If we take 1420 away from 1700, we end up with 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

The quotient of the division is 77342.55, and the remainder is 0.28.