We're dividing 643811 by 11 
We're looking to find how many times 11 goes into 643811.

Let's proceed to step 1:
11 goes into 6 0 times with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Take the next digit (4) from the dividend and append it to 6, then repeat: 64 / 11

Going ahead to step 2:
The number 11 fits into 64 5 times, leaving a remainder of 9.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
The remainder is 9 after subtracting 55 from 64.
Bring next digit (3) of the dividend behind the 9 and repeat the process: 93 / 11

Step 3:
11 goes into 93 8 times with a remainder of 5.
The number 8 becomes the next digit in our result. 
Result so far: 58.0
Deduct 88 from 93 and we're left with 5.
Take the next digit (8) from the dividend and append it to 5, then repeat: 58 / 11

On to step 4:
When dividing 58 by 11, we get 5 with a remainder of 3.
Write down 5 as next digit of the result. 
Result so far: 585.0
Subtract 55 from 58 to get 3.
Fetch the next digit (1) from the dividend, attach it to 3 and continue: 31 / 11

Step 5:
When dividing 31 by 11, we get 2 with a remainder of 9.
The number 2 becomes the next digit in our result. 
Result so far: 5852.0
If we take 22 away from 31, we end up with 9.
Append the next digit (1) from the dividend to 9 and continue with: 91 / 11

Step 6:
The number 11 fits into 91 8 times, leaving a remainder of 3.
Put 8 as the next digit of the answer. 
Result so far: 58528.0
Subtracting 88 from 91 leaves us with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 7:
The number 11 fits into 30 2 times, leaving a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 58528.2
Subtracting 22 from 30 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 8:
11 goes into 80 7 times with a remainder of 3.
Record the quotient 7 as the next digit in the result. 
Result so far: 58528.27
The remainder is 3 after subtracting 77 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 9:
11 can be fit into 30 2 times, resulting in a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 58528.272
If we take 22 away from 30, 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.

On to step 10:
If we divide 80 by 11, we get 7 and a remainder of 3.
Record the quotient 7 as the next digit in the result. 
Result so far: 58528.2727
Subtract 77 from 80 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.

Going ahead to step 11:
The number 11 fits into 30 2 times, leaving a remainder of 8.
The number 2 becomes the next digit in our result. 
Result so far: 58528.27272
The remainder is 8 after subtracting 22 from 30.
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 12:
When dividing 80 by 11, we get 7 with a remainder of 3.
Write down 7 as next digit of the result. 
Result so far: 58528.272727
The remainder is 3 after subtracting 77 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 13:
If we divide 30 by 11, we get 2 and a remainder of 8.
Use 2 as the next digit of our solution. 
Result so far: 58528.2727272
Deduct 22 from 30 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 14:
If we divide 80 by 11, we get 7 and a remainder of 3.
Use 7 as the next digit of our solution. 
Result so far: 58528.27272727
Subtract 77 from 80 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.

The final outcome is 58528.27272727, with a leftover of 3e-09.