We look at the division of 646147 by 13 
We want to figure out the number of times 646147 can be divided by 13.

Going ahead to step 1:
If we divide 6 by 13, we get 0 and a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Take the next digit (4) from the dividend and append it to 6, then repeat: 64 / 13

Moving on to step 2:
If we divide 64 by 13, we get 4 and a remainder of 12.
Put 4 as the next digit of the answer. 
Result so far: 4.0
If we take 52 away from 64, we end up with 12.
Include the next digit (6) from the dividend after 12, then repeat: 126 / 13

Step 3:
13 goes into 126 9 times with a remainder of 9.
Record the quotient 9 as the next digit in the result. 
Result so far: 49.0
Deduct 117 from 126 and we're left with 9.
Bring next digit (1) of the dividend behind the 9 and repeat the process: 91 / 13

Step 4:
91 divided by 13 is 7 with a remainder of 0.
The number 7 becomes the next digit in our result. 
Result so far: 497.0
The remainder is 0 after subtracting 91 from 91.
Take the next digit (4) from the dividend and append it to 0, then repeat: 4 / 13

Going ahead to step 5:
The number 13 fits into 4 0 times, leaving a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 4970.0
If we subtract 0 from 4, we get 4.
Append the next digit (7) from the dividend to 4 and continue with: 47 / 13

Let's proceed to step 6:
13 can be fit into 47 3 times, resulting in a remainder of 8.
The next digit of our result is 3. 
Result so far: 49703.0
Deduct 39 from 47 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.

Step 7:
When dividing 80 by 13, we get 6 with a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 49703.6
Subtract 78 from 80 to 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.

Step 8:
When dividing 20 by 13, we get 1 with a remainder of 7.
Record the quotient 1 as the next digit in the result. 
Result so far: 49703.61
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 9:
70 divided by 13 is 5 with a remainder of 5.
The next digit of our result is 5. 
Result so far: 49703.615
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 10:
50 divided by 13 is 3 with a remainder of 11.
Write down 3 as next digit of the result. 
Result so far: 49703.6153
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 11:
13 can be fit into 110 8 times, resulting in a remainder of 6.
Put 8 as the next digit of the answer. 
Result so far: 49703.61538
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.

On to step 12:
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: 49703.615384
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.

Let's proceed to step 13:
If we divide 80 by 13, we get 6 and a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 49703.6153846
Subtract 78 from 80 to 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.

Moving on to step 14:
The number 13 fits into 20 1 times, leaving a remainder of 7.
Record the quotient 1 as the next digit in the result. 
Result so far: 49703.61538461
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.

Our division results in 49703.61538461 with a remaining 7e-09.