Let's divide 21975646 by 905
The aim is to understand the frequency of 905 in 21975646.

Moving on to step 1:
If we divide 2 by 905, we get 0 and a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 905

Moving on to step 2:
905 can be fit into 21 0 times, resulting in a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 21 to get 21.
Bring next digit (9) of the dividend behind the 21 and repeat the process: 219 / 905

Going ahead to step 3:
905 goes into 219 0 times with a remainder of 219.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 219 after subtracting 0 from 219.
Take the next digit (7) from the dividend and append it to 219, then repeat: 2197 / 905

Advancing to step 4:
If we divide 2197 by 905, we get 2 and a remainder of 387.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we take 1810 away from 2197, we end up with 387.
Take the next digit (5) from the dividend and append it to 387, then repeat: 3875 / 905

Going ahead to step 5:
The number 905 fits into 3875 4 times, leaving a remainder of 255.
Use 4 as the next digit of our solution. 
Result so far: 24.0
If we subtract 3620 from 3875, we get 255.
Append the next digit (6) from the dividend to 255 and continue with: 2556 / 905

On to step 6:
The number 905 fits into 2556 2 times, leaving a remainder of 746.
The next digit of our result is 2. 
Result so far: 242.0
The remainder is 746 after subtracting 1810 from 2556.
Grab the next digit (4) from the dividend, add it to 746, then carry on: 7464 / 905

Going ahead to step 7:
905 can be fit into 7464 8 times, resulting in a remainder of 224.
Record the quotient 8 as the next digit in the result. 
Result so far: 2428.0
If we subtract 7240 from 7464, we get 224.
Grab the next digit (6) from the dividend, add it to 224, then carry on: 2246 / 905

Going ahead to step 8:
905 goes into 2246 2 times with a remainder of 436.
Put 2 as the next digit of the answer. 
Result so far: 24282.0
Subtracting 1810 from 2246 leaves us with 436.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4360, and continue the process.

Step 9:
When dividing 4360 by 905, we get 4 with a remainder of 740.
The next digit of our result is 4. 
Result so far: 24282.4
If we take 3620 away from 4360, we end up with 740.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7400, and continue the process.

Let's proceed to step 10:
When dividing 7400 by 905, we get 8 with a remainder of 160.
The number 8 becomes the next digit in our result. 
Result so far: 24282.48
Subtract 7240 from 7400 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 11:
If we divide 1600 by 905, we get 1 and a remainder of 695.
Write down 1 as next digit of the result. 
Result so far: 24282.481
Deduct 905 from 1600 and we're left with 695.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6950, and continue the process.

Going ahead to step 12:
905 goes into 6950 7 times with a remainder of 615.
Write down 7 as next digit of the result. 
Result so far: 24282.4817
If we take 6335 away from 6950, we end up with 615.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6150, and continue the process.

Going ahead to step 13:
The number 905 fits into 6150 6 times, leaving a remainder of 720.
Put 6 as the next digit of the answer. 
Result so far: 24282.48176
If we subtract 5430 from 6150, we get 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7200, and continue the process.

On to step 14:
The number 905 fits into 7200 7 times, leaving a remainder of 865.
Put 7 as the next digit of the answer. 
Result so far: 24282.481767
Subtract 6335 from 7200 to get 865.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8650, and continue the process.

On to step 15:
When dividing 8650 by 905, we get 9 with a remainder of 505.
Write down 9 as next digit of the result. 
Result so far: 24282.4817679
If we take 8145 away from 8650, we end up with 505.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5050, and continue the process.

Let's proceed to step 16:
When dividing 5050 by 905, we get 5 with a remainder of 525.
Write down 5 as next digit of the result. 
Result so far: 24282.48176795
If we take 4525 away from 5050, we end up with 525.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5250, and continue the process.

After the division, we end up with 24282.48176795 and a remainder of 5.25e-07.