640888 divided by 11 
Our goal is to divide 640888 by 11.

Let's proceed to step 1:
11 goes into 6 0 times with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Append the next digit (4) from the dividend to 6 and continue with: 64 / 11

Let's proceed to step 2:
11 can be fit into 64 5 times, resulting in a remainder of 9.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
Subtract 55 from 64 to get 9.
Take the next digit (0) from the dividend and append it to 9, then repeat: 90 / 11

Let's proceed to step 3:
When dividing 90 by 11, we get 8 with a remainder of 2.
Write down 8 as next digit of the result. 
Result so far: 58.0
The remainder is 2 after subtracting 88 from 90.
Include the next digit (8) from the dividend after 2, then repeat: 28 / 11

Step 4:
When dividing 28 by 11, we get 2 with a remainder of 6.
Use 2 as the next digit of our solution. 
Result so far: 582.0
Subtracting 22 from 28 leaves us with 6.
Append the next digit (8) from the dividend to 6 and continue with: 68 / 11

Advancing to step 5:
The number 11 fits into 68 6 times, leaving a remainder of 2.
Use 6 as the next digit of our solution. 
Result so far: 5826.0
The remainder is 2 after subtracting 66 from 68.
Append the next digit (8) from the dividend to 2 and continue with: 28 / 11

Step 6:
11 can be fit into 28 2 times, resulting in a remainder of 6.
Put 2 as the next digit of the answer. 
Result so far: 58262.0
If we subtract 22 from 28, 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.

Let's proceed to step 7:
The number 11 fits into 60 5 times, leaving a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 58262.5
If we subtract 55 from 60, 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 8:
When dividing 50 by 11, we get 4 with a remainder of 6.
Put 4 as the next digit of the answer. 
Result so far: 58262.54
Subtract 44 from 50 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 9:
11 can be fit into 60 5 times, resulting in a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 58262.545
Subtract 55 from 60 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.

Advancing to step 10:
11 goes into 50 4 times with a remainder of 6.
The number 4 becomes the next digit in our result. 
Result so far: 58262.5454
Subtract 44 from 50 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.

Step 11:
11 can be fit into 60 5 times, resulting in a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 58262.54545
The remainder is 5 after subtracting 55 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 12:
11 goes into 50 4 times with a remainder of 6.
Put 4 as the next digit of the answer. 
Result so far: 58262.545454
Subtract 44 from 50 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.

Step 13:
11 goes into 60 5 times with a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 58262.5454545
Deduct 55 from 60 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.

Let's proceed to step 14:
11 goes into 50 4 times with a remainder of 6.
The number 4 becomes the next digit in our result. 
Result so far: 58262.54545454
Deduct 44 from 50 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.

The final outcome is 58262.54545454, with a leftover of 6e-09.