We look at the division of 13903616 by 911 
The aim is to understand the frequency of 911 in 13903616.

Moving on to step 1:
911 goes into 1 0 times with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Bring next digit (3) of the dividend behind the 1 and repeat the process: 13 / 911

Going ahead to step 2:
911 goes into 13 0 times with a remainder of 13.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 13 to get 13.
Take the next digit (9) from the dividend and append it to 13, then repeat: 139 / 911

Advancing to step 3:
911 goes into 139 0 times with a remainder of 139.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 139 and we're left with 139.
Include the next digit (0) from the dividend after 139, then repeat: 1390 / 911

On to step 4:
911 goes into 1390 1 times with a remainder of 479.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 911 from 1390 and we're left with 479.
Fetch the next digit (3) from the dividend, attach it to 479 and continue: 4793 / 911

Going ahead to step 5:
When dividing 4793 by 911, we get 5 with a remainder of 238.
Use 5 as the next digit of our solution. 
Result so far: 15.0
If we take 4555 away from 4793, we end up with 238.
Fetch the next digit (6) from the dividend, attach it to 238 and continue: 2386 / 911

On to step 6:
911 can be fit into 2386 2 times, resulting in a remainder of 564.
The next digit of our result is 2. 
Result so far: 152.0
Deduct 1822 from 2386 and we're left with 564.
Grab the next digit (1) from the dividend, add it to 564, then carry on: 5641 / 911

Going ahead to step 7:
If we divide 5641 by 911, we get 6 and a remainder of 175.
Write down 6 as next digit of the result. 
Result so far: 1526.0
Subtracting 5466 from 5641 leaves us with 175.
Bring next digit (6) of the dividend behind the 175 and repeat the process: 1756 / 911

Moving on to step 8:
If we divide 1756 by 911, we get 1 and a remainder of 845.
Record the quotient 1 as the next digit in the result. 
Result so far: 15261.0
The remainder is 845 after subtracting 911 from 1756.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8450, and continue the process.

Step 9:
911 goes into 8450 9 times with a remainder of 251.
Write down 9 as next digit of the result. 
Result so far: 15261.9
If we subtract 8199 from 8450, we get 251.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2510, and continue the process.

Moving on to step 10:
911 can be fit into 2510 2 times, resulting in a remainder of 688.
The next digit of our result is 2. 
Result so far: 15261.92
If we subtract 1822 from 2510, we get 688.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6880, and continue the process.

Step 11:
911 can be fit into 6880 7 times, resulting in a remainder of 503.
Put 7 as the next digit of the answer. 
Result so far: 15261.927
Deduct 6377 from 6880 and we're left with 503.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5030, and continue the process.

On to step 12:
911 can be fit into 5030 5 times, resulting in a remainder of 475.
Write down 5 as next digit of the result. 
Result so far: 15261.9275
The remainder is 475 after subtracting 4555 from 5030.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4750, and continue the process.

On to step 13:
911 goes into 4750 5 times with a remainder of 195.
Use 5 as the next digit of our solution. 
Result so far: 15261.92755
If we take 4555 away from 4750, we end up with 195.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1950, and continue the process.

The quotient of the division is 15261.92755, and the remainder is 0.000195.