We look at the division of 13473394 by 111 
The aim is to understand the frequency of 111 in 13473394.

Advancing to step 1:
If we divide 1 by 111, we get 0 and a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Take the next digit (3) from the dividend and append it to 1, then repeat: 13 / 111

Step 2:
111 goes into 13 0 times with a remainder of 13.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 13 after subtracting 0 from 13.
Bring next digit (4) of the dividend behind the 13 and repeat the process: 134 / 111

On to step 3:
134 divided by 111 is 1 with a remainder of 23.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 111 away from 134, we end up with 23.
Include the next digit (7) from the dividend after 23, then repeat: 237 / 111

Going ahead to step 4:
The number 111 fits into 237 2 times, leaving a remainder of 15.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
Deduct 222 from 237 and we're left with 15.
Grab the next digit (3) from the dividend, add it to 15, then carry on: 153 / 111

Let's proceed to step 5:
111 can be fit into 153 1 times, resulting in a remainder of 42.
The number 1 becomes the next digit in our result. 
Result so far: 121.0
Deduct 111 from 153 and we're left with 42.
Fetch the next digit (3) from the dividend, attach it to 42 and continue: 423 / 111

Moving on to step 6:
When dividing 423 by 111, we get 3 with a remainder of 90.
Record the quotient 3 as the next digit in the result. 
Result so far: 1213.0
If we take 333 away from 423, we end up with 90.
Append the next digit (9) from the dividend to 90 and continue with: 909 / 111

Let's proceed to step 7:
The number 111 fits into 909 8 times, leaving a remainder of 21.
The number 8 becomes the next digit in our result. 
Result so far: 12138.0
Subtract 888 from 909 to get 21.
Include the next digit (4) from the dividend after 21, then repeat: 214 / 111

Moving on to step 8:
111 goes into 214 1 times with a remainder of 103.
Put 1 as the next digit of the answer. 
Result so far: 121381.0
The remainder is 103 after subtracting 111 from 214.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1030, and continue the process.

Advancing to step 9:
1030 divided by 111 is 9 with a remainder of 31.
Put 9 as the next digit of the answer. 
Result so far: 121381.9
Subtracting 999 from 1030 leaves us with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

On to step 10:
The number 111 fits into 310 2 times, leaving a remainder of 88.
Record the quotient 2 as the next digit in the result. 
Result so far: 121381.92
Deduct 222 from 310 and we're left with 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

Advancing to step 11:
111 can be fit into 880 7 times, resulting in a remainder of 103.
Record the quotient 7 as the next digit in the result. 
Result so far: 121381.927
If we take 777 away from 880, we end up with 103.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1030, and continue the process.

On to step 12:
When dividing 1030 by 111, we get 9 with a remainder of 31.
Use 9 as the next digit of our solution. 
Result so far: 121381.9279
The remainder is 31 after subtracting 999 from 1030.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

On to step 13:
111 goes into 310 2 times with a remainder of 88.
The number 2 becomes the next digit in our result. 
Result so far: 121381.92792
The remainder is 88 after subtracting 222 from 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

On to step 14:
When dividing 880 by 111, we get 7 with a remainder of 103.
Record the quotient 7 as the next digit in the result. 
Result so far: 121381.927927
Subtracting 777 from 880 leaves us with 103.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1030, and continue the process.

Let's proceed to step 15:
When dividing 1030 by 111, we get 9 with a remainder of 31.
Record the quotient 9 as the next digit in the result. 
Result so far: 121381.9279279
Subtracting 999 from 1030 leaves us with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Let's proceed to step 16:
The number 111 fits into 310 2 times, leaving a remainder of 88.
Use 2 as the next digit of our solution. 
Result so far: 121381.92792792
Deduct 222 from 310 and we're left with 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

The final result is 121381.92792792 with a remainder of 8.8e-08.