We look at the division of 61664011 by 13 
We want to figure out the number of times 61664011 can be divided by 13.

On to step 1:
When dividing 6 by 13, we get 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Bring next digit (1) of the dividend behind the 6 and repeat the process: 61 / 13

Advancing to step 2:
61 divided by 13 is 4 with a remainder of 9.
The next digit of our result is 4. 
Result so far: 4.0
Deduct 52 from 61 and we're left with 9.
Include the next digit (6) from the dividend after 9, then repeat: 96 / 13

On to step 3:
96 divided by 13 is 7 with a remainder of 5.
Use 7 as the next digit of our solution. 
Result so far: 47.0
If we subtract 91 from 96, we get 5.
Include the next digit (6) from the dividend after 5, then repeat: 56 / 13

Let's proceed to step 4:
13 goes into 56 4 times with a remainder of 4.
Write down 4 as next digit of the result. 
Result so far: 474.0
If we take 52 away from 56, we end up with 4.
Include the next digit (4) from the dividend after 4, then repeat: 44 / 13

Moving on to step 5:
13 can be fit into 44 3 times, resulting in a remainder of 5.
Use 3 as the next digit of our solution. 
Result so far: 4743.0
The remainder is 5 after subtracting 39 from 44.
Grab the next digit (0) from the dividend, add it to 5, then carry on: 50 / 13

Moving on to step 6:
The number 13 fits into 50 3 times, leaving a remainder of 11.
Put 3 as the next digit of the answer. 
Result so far: 47433.0
If we subtract 39 from 50, we get 11.
Bring next digit (1) of the dividend behind the 11 and repeat the process: 111 / 13

Let's proceed to step 7:
If we divide 111 by 13, we get 8 and a remainder of 7.
The next digit of our result is 8. 
Result so far: 474338.0
If we subtract 104 from 111, we get 7.
Bring next digit (1) of the dividend behind the 7 and repeat the process: 71 / 13

Let's proceed to step 8:
The number 13 fits into 71 5 times, leaving a remainder of 6.
The number 5 becomes the next digit in our result. 
Result so far: 4743385.0
If we subtract 65 from 71, we 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.

On to step 9:
When dividing 60 by 13, we get 4 with a remainder of 8.
Put 4 as the next digit of the answer. 
Result so far: 4743385.4
The remainder is 8 after subtracting 52 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 10:
13 can be fit into 80 6 times, resulting in a remainder of 2.
Use 6 as the next digit of our solution. 
Result so far: 4743385.46
If we take 78 away from 80, we end up 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.

Let's proceed to step 11:
13 goes into 20 1 times with a remainder of 7.
Use 1 as the next digit of our solution. 
Result so far: 4743385.461
If we subtract 13 from 20, we 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.

Step 12:
13 can be fit into 70 5 times, resulting in a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 4743385.4615
Deduct 65 from 70 and we're left with 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 13:
13 goes into 50 3 times with a remainder of 11.
Put 3 as the next digit of the answer. 
Result so far: 4743385.46153
Subtracting 39 from 50 leaves us 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.

On to step 14:
When dividing 110 by 13, we get 8 with a remainder of 6.
The number 8 becomes the next digit in our result. 
Result so far: 4743385.461538
The remainder is 6 after subtracting 104 from 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 15:
13 can be fit into 60 4 times, resulting in a remainder of 8.
Record the quotient 4 as the next digit in the result. 
Result so far: 4743385.4615384
Deduct 52 from 60 and we're left 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.

Let's proceed to step 16:
The number 13 fits into 80 6 times, leaving a remainder of 2.
Record the quotient 6 as the next digit in the result. 
Result so far: 4743385.46153846
The remainder is 2 after subtracting 78 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

The final outcome is 4743385.46153846, with a leftover of 2e-09.