64640051 ÷ 617 
We want to divide 64640051 by 617.

On to step 1:
The number 617 fits into 6 0 times, leaving a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Append the next digit (4) from the dividend to 6 and continue with: 64 / 617

Going ahead to step 2:
64 divided by 617 is 0 with a remainder of 64.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 64 leaves us with 64.
Append the next digit (6) from the dividend to 64 and continue with: 646 / 617

Going ahead to step 3:
646 divided by 617 is 1 with a remainder of 29.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 617 from 646 leaves us with 29.
Fetch the next digit (4) from the dividend, attach it to 29 and continue: 294 / 617

Moving on to step 4:
617 can be fit into 294 0 times, resulting in a remainder of 294.
The next digit of our result is 0. 
Result so far: 10.0
The remainder is 294 after subtracting 0 from 294.
Grab the next digit (0) from the dividend, add it to 294, then carry on: 2940 / 617

Advancing to step 5:
2940 divided by 617 is 4 with a remainder of 472.
The number 4 becomes the next digit in our result. 
Result so far: 104.0
Subtract 2468 from 2940 to get 472.
Take the next digit (0) from the dividend and append it to 472, then repeat: 4720 / 617

Let's proceed to step 6:
If we divide 4720 by 617, we get 7 and a remainder of 401.
Use 7 as the next digit of our solution. 
Result so far: 1047.0
If we subtract 4319 from 4720, we get 401.
Append the next digit (5) from the dividend to 401 and continue with: 4015 / 617

Going ahead to step 7:
The number 617 fits into 4015 6 times, leaving a remainder of 313.
The number 6 becomes the next digit in our result. 
Result so far: 10476.0
Subtract 3702 from 4015 to get 313.
Append the next digit (1) from the dividend to 313 and continue with: 3131 / 617

Moving on to step 8:
617 can be fit into 3131 5 times, resulting in a remainder of 46.
The next digit of our result is 5. 
Result so far: 104765.0
Subtract 3085 from 3131 to get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Advancing to step 9:
460 divided by 617 is 0 with a remainder of 460.
Use 0 as the next digit of our solution. 
Result so far: 104765.0
Subtracting 0 from 460 leaves us with 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4600, and continue the process.

Advancing to step 10:
4600 divided by 617 is 7 with a remainder of 281.
The next digit of our result is 7. 
Result so far: 104765.07
If we take 4319 away from 4600, we end up with 281.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2810, and continue the process.

On to step 11:
617 goes into 2810 4 times with a remainder of 342.
Record the quotient 4 as the next digit in the result. 
Result so far: 104765.074
If we take 2468 away from 2810, we end up with 342.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3420, and continue the process.

Moving on to step 12:
617 goes into 3420 5 times with a remainder of 335.
The number 5 becomes the next digit in our result. 
Result so far: 104765.0745
The remainder is 335 after subtracting 3085 from 3420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3350, and continue the process.

Going ahead to step 13:
When dividing 3350 by 617, we get 5 with a remainder of 265.
Record the quotient 5 as the next digit in the result. 
Result so far: 104765.07455
Subtracting 3085 from 3350 leaves us with 265.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2650, and continue the process.

The final result is 104765.07455 with a remainder of 0.000265.