We look at the division of 64122541 by 13 
We want to figure out the number of times 64122541 can be divided by 13.

Advancing to step 1:
13 goes into 6 0 times with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 13

Going ahead to step 2:
The number 13 fits into 64 4 times, leaving a remainder of 12.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Subtract 52 from 64 to get 12.
Bring next digit (1) of the dividend behind the 12 and repeat the process: 121 / 13

Advancing to step 3:
121 divided by 13 is 9 with a remainder of 4.
The next digit of our result is 9. 
Result so far: 49.0
The remainder is 4 after subtracting 117 from 121.
Take the next digit (2) from the dividend and append it to 4, then repeat: 42 / 13

Advancing to step 4:
42 divided by 13 is 3 with a remainder of 3.
Use 3 as the next digit of our solution. 
Result so far: 493.0
Deduct 39 from 42 and we're left with 3.
Fetch the next digit (2) from the dividend, attach it to 3 and continue: 32 / 13

Going ahead to step 5:
If we divide 32 by 13, we get 2 and a remainder of 6.
Write down 2 as next digit of the result. 
Result so far: 4932.0
If we take 26 away from 32, we end up with 6.
Grab the next digit (5) from the dividend, add it to 6, then carry on: 65 / 13

On to step 6:
65 divided by 13 is 5 with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 49325.0
If we subtract 65 from 65, we get 0.
Take the next digit (4) from the dividend and append it to 0, then repeat: 4 / 13

Step 7:
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: 493250.0
The remainder is 4 after subtracting 0 from 4.
Include the next digit (1) from the dividend after 4, then repeat: 41 / 13

On to step 8:
If we divide 41 by 13, we get 3 and a remainder of 2.
Put 3 as the next digit of the answer. 
Result so far: 4932503.0
The remainder is 2 after subtracting 39 from 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 9:
The number 13 fits into 20 1 times, leaving a remainder of 7.
The number 1 becomes the next digit in our result. 
Result so far: 4932503.1
If we take 13 away from 20, we end up 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.

Advancing to step 10:
70 divided by 13 is 5 with a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 4932503.15
Subtract 65 from 70 to 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.

Let's proceed to step 11:
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: 4932503.153
The remainder is 11 after subtracting 39 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Let's proceed to step 12:
The number 13 fits into 110 8 times, leaving a remainder of 6.
Record the quotient 8 as the next digit in the result. 
Result so far: 4932503.1538
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.

Step 13:
If we divide 60 by 13, we get 4 and a remainder of 8.
Record the quotient 4 as the next digit in the result. 
Result so far: 4932503.15384
If we take 52 away from 60, we end up 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.

Moving on to step 14:
When dividing 80 by 13, we get 6 with a remainder of 2.
Write down 6 as next digit of the result. 
Result so far: 4932503.153846
Deduct 78 from 80 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 15:
20 divided by 13 is 1 with a remainder of 7.
Write down 1 as next digit of the result. 
Result so far: 4932503.1538461
Subtract 13 from 20 to get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

On to step 16:
The number 13 fits into 70 5 times, leaving a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 4932503.15384615
Subtract 65 from 70 to 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.

The final outcome is 4932503.15384615, with a leftover of 5e-09.