We divide 445571 by 13
The aim is to understand the frequency of 13 in 445571.

Let's proceed to step 1:
13 goes into 4 0 times with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Grab the next digit (4) from the dividend, add it to 4, then carry on: 44 / 13

Let's proceed to step 2:
13 goes into 44 3 times with a remainder of 5.
Write down 3 as next digit of the result. 
Result so far: 3.0
The remainder is 5 after subtracting 39 from 44.
Bring next digit (5) of the dividend behind the 5 and repeat the process: 55 / 13

Going ahead to step 3:
55 divided by 13 is 4 with a remainder of 3.
Record the quotient 4 as the next digit in the result. 
Result so far: 34.0
Subtracting 52 from 55 leaves us with 3.
Grab the next digit (5) from the dividend, add it to 3, then carry on: 35 / 13

Moving on to step 4:
35 divided by 13 is 2 with a remainder of 9.
Record the quotient 2 as the next digit in the result. 
Result so far: 342.0
If we subtract 26 from 35, we get 9.
Bring next digit (7) of the dividend behind the 9 and repeat the process: 97 / 13

On to step 5:
When dividing 97 by 13, we get 7 with a remainder of 6.
Write down 7 as next digit of the result. 
Result so far: 3427.0
Subtracting 91 from 97 leaves us with 6.
Append the next digit (1) from the dividend to 6 and continue with: 61 / 13

Advancing to step 6:
13 goes into 61 4 times with a remainder of 9.
Use 4 as the next digit of our solution. 
Result so far: 34274.0
The remainder is 9 after subtracting 52 from 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Moving on to step 7:
When dividing 90 by 13, we get 6 with a remainder of 12.
The next digit of our result is 6. 
Result so far: 34274.6
Deduct 78 from 90 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 8:
13 can be fit into 120 9 times, resulting in a remainder of 3.
Use 9 as the next digit of our solution. 
Result so far: 34274.69
Subtract 117 from 120 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 9:
The number 13 fits into 30 2 times, leaving a remainder of 4.
Write down 2 as next digit of the result. 
Result so far: 34274.692
Deduct 26 from 30 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 10:
13 can be fit into 40 3 times, resulting in a remainder of 1.
Put 3 as the next digit of the answer. 
Result so far: 34274.6923
The remainder is 1 after subtracting 39 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 11:
If we divide 10 by 13, we get 0 and a remainder of 10.
The next digit of our result is 0. 
Result so far: 34274.6923
Subtract 0 from 10 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 12:
100 divided by 13 is 7 with a remainder of 9.
Record the quotient 7 as the next digit in the result. 
Result so far: 34274.692307
Subtract 91 from 100 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Let's proceed to step 13:
If we divide 90 by 13, we get 6 and a remainder of 12.
Put 6 as the next digit of the answer. 
Result so far: 34274.6923076
Subtract 78 from 90 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 14:
When dividing 120 by 13, we get 9 with a remainder of 3.
Use 9 as the next digit of our solution. 
Result so far: 34274.69230769
Subtract 117 from 120 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Our division results in 34274.69230769 with a remaining 3e-09.