We divide 577640 by 13
The aim is to understand the frequency of 13 in 577640.

Moving on to step 1:
The number 13 fits into 5 0 times, leaving a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Take the next digit (7) from the dividend and append it to 5, then repeat: 57 / 13

Advancing to step 2:
13 goes into 57 4 times with a remainder of 5.
Use 4 as the next digit of our solution. 
Result so far: 4.0
The remainder is 5 after subtracting 52 from 57.
Take the next digit (7) from the dividend and append it to 5, then repeat: 57 / 13

Going ahead to step 3:
13 can be fit into 57 4 times, resulting in a remainder of 5.
The next digit of our result is 4. 
Result so far: 44.0
If we take 52 away from 57, we end up with 5.
Include the next digit (6) from the dividend after 5, then repeat: 56 / 13

Going ahead to step 4:
If we divide 56 by 13, we get 4 and a remainder of 4.
Record the quotient 4 as the next digit in the result. 
Result so far: 444.0
The remainder is 4 after subtracting 52 from 56.
Append the next digit (4) from the dividend to 4 and continue with: 44 / 13

On to step 5:
44 divided by 13 is 3 with a remainder of 5.
Write down 3 as next digit of the result. 
Result so far: 4443.0
The remainder is 5 after subtracting 39 from 44.
Take the next digit (0) from the dividend and append it to 5, then repeat: 50 / 13

Let's proceed to step 6:
13 can be fit into 50 3 times, resulting in a remainder of 11.
Put 3 as the next digit of the answer. 
Result so far: 44433.0
If we take 39 away from 50, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Moving on to step 7:
110 divided by 13 is 8 with a remainder of 6.
Put 8 as the next digit of the answer. 
Result so far: 44433.8
Subtract 104 from 110 to 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.

Moving on to step 8:
60 divided by 13 is 4 with a remainder of 8.
Use 4 as the next digit of our solution. 
Result so far: 44433.84
Subtract 52 from 60 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 9:
13 goes into 80 6 times with a remainder of 2.
Use 6 as the next digit of our solution. 
Result so far: 44433.846
If we subtract 78 from 80, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 10:
When dividing 20 by 13, we get 1 with a remainder of 7.
Put 1 as the next digit of the answer. 
Result so far: 44433.8461
Deduct 13 from 20 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Moving on to step 11:
When dividing 70 by 13, we get 5 with a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 44433.84615
If we subtract 65 from 70, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 12:
13 can be fit into 50 3 times, resulting in a remainder of 11.
Record the quotient 3 as the next digit in the result. 
Result so far: 44433.846153
Subtract 39 from 50 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Going ahead to step 13:
The number 13 fits into 110 8 times, leaving a remainder of 6.
The number 8 becomes the next digit in our result. 
Result so far: 44433.8461538
Deduct 104 from 110 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 14:
13 goes into 60 4 times with a remainder of 8.
The next digit of our result is 4. 
Result so far: 44433.84615384
Subtracting 52 from 60 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

The final result is 44433.84615384 with a remainder of 8e-09.