63153690 ÷ 909 
The aim is to understand the frequency of 909 in 63153690.

On to step 1:
When dividing 6 by 909, we get 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Grab the next digit (3) from the dividend, add it to 6, then carry on: 63 / 909

Step 2:
When dividing 63 by 909, we get 0 with a remainder of 63.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 63 after subtracting 0 from 63.
Fetch the next digit (1) from the dividend, attach it to 63 and continue: 631 / 909

On to step 3:
If we divide 631 by 909, we get 0 and a remainder of 631.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 631 after subtracting 0 from 631.
Bring next digit (5) of the dividend behind the 631 and repeat the process: 6315 / 909

Advancing to step 4:
When dividing 6315 by 909, we get 6 with a remainder of 861.
The next digit of our result is 6. 
Result so far: 6.0
Deduct 5454 from 6315 and we're left with 861.
Grab the next digit (3) from the dividend, add it to 861, then carry on: 8613 / 909

Going ahead to step 5:
909 can be fit into 8613 9 times, resulting in a remainder of 432.
Use 9 as the next digit of our solution. 
Result so far: 69.0
If we take 8181 away from 8613, we end up with 432.
Take the next digit (6) from the dividend and append it to 432, then repeat: 4326 / 909

On to step 6:
909 can be fit into 4326 4 times, resulting in a remainder of 690.
Put 4 as the next digit of the answer. 
Result so far: 694.0
Deduct 3636 from 4326 and we're left with 690.
Grab the next digit (9) from the dividend, add it to 690, then carry on: 6909 / 909

Moving on to step 7:
When dividing 6909 by 909, we get 7 with a remainder of 546.
Write down 7 as next digit of the result. 
Result so far: 6947.0
If we take 6363 away from 6909, we end up with 546.
Take the next digit (0) from the dividend and append it to 546, then repeat: 5460 / 909

On to step 8:
The number 909 fits into 5460 6 times, leaving a remainder of 6.
Write down 6 as next digit of the result. 
Result so far: 69476.0
If we subtract 5454 from 5460, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 9:
60 divided by 909 is 0 with a remainder of 60.
The number 0 becomes the next digit in our result. 
Result so far: 69476.0
If we subtract 0 from 60, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Moving on to step 10:
If we divide 600 by 909, we get 0 and a remainder of 600.
Write down 0 as next digit of the result. 
Result so far: 69476.0
The remainder is 600 after subtracting 0 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

Our division results in 69476.0 with a remaining 0.6.