We look at the division of 9988636 by 838 
The aim is to understand the frequency of 838 in 9988636.

Moving on to step 1:
When dividing 9 by 838, we get 0 with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Grab the next digit (9) from the dividend, add it to 9, then carry on: 99 / 838

On to step 2:
The number 838 fits into 99 0 times, leaving a remainder of 99.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 99 after subtracting 0 from 99.
Bring next digit (8) of the dividend behind the 99 and repeat the process: 998 / 838

On to step 3:
The number 838 fits into 998 1 times, leaving a remainder of 160.
The next digit of our result is 1. 
Result so far: 1.0
If we take 838 away from 998, we end up with 160.
Append the next digit (8) from the dividend to 160 and continue with: 1608 / 838

Moving on to step 4:
838 goes into 1608 1 times with a remainder of 770.
The number 1 becomes the next digit in our result. 
Result so far: 11.0
Deduct 838 from 1608 and we're left with 770.
Append the next digit (6) from the dividend to 770 and continue with: 7706 / 838

Advancing to step 5:
838 can be fit into 7706 9 times, resulting in a remainder of 164.
Write down 9 as next digit of the result. 
Result so far: 119.0
If we subtract 7542 from 7706, we get 164.
Grab the next digit (3) from the dividend, add it to 164, then carry on: 1643 / 838

Going ahead to step 6:
838 goes into 1643 1 times with a remainder of 805.
The next digit of our result is 1. 
Result so far: 1191.0
Subtracting 838 from 1643 leaves us with 805.
Fetch the next digit (6) from the dividend, attach it to 805 and continue: 8056 / 838

Advancing to step 7:
If we divide 8056 by 838, we get 9 and a remainder of 514.
Record the quotient 9 as the next digit in the result. 
Result so far: 11919.0
Subtracting 7542 from 8056 leaves us with 514.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5140, and continue the process.

Moving on to step 8:
838 goes into 5140 6 times with a remainder of 112.
Put 6 as the next digit of the answer. 
Result so far: 11919.6
If we subtract 5028 from 5140, we get 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Step 9:
838 goes into 1120 1 times with a remainder of 282.
The number 1 becomes the next digit in our result. 
Result so far: 11919.61
The remainder is 282 after subtracting 838 from 1120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2820, and continue the process.

Step 10:
The number 838 fits into 2820 3 times, leaving a remainder of 306.
Write down 3 as next digit of the result. 
Result so far: 11919.613
If we subtract 2514 from 2820, we get 306.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3060, and continue the process.

Moving on to step 11:
If we divide 3060 by 838, we get 3 and a remainder of 546.
Put 3 as the next digit of the answer. 
Result so far: 11919.6133
Subtract 2514 from 3060 to get 546.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5460, and continue the process.

After the division, we end up with 11919.6133 and a remainder of 0.00546.