We divide 639591 by 417
Our goal is to divide 639591 by 417.

Step 1:
417 goes into 6 0 times with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Append the next digit (3) from the dividend to 6 and continue with: 63 / 417

Going ahead to step 2:
If we divide 63 by 417, we get 0 and a remainder of 63.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 63 leaves us with 63.
Bring next digit (9) of the dividend behind the 63 and repeat the process: 639 / 417

Let's proceed to step 3:
If we divide 639 by 417, we get 1 and a remainder of 222.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 417 from 639 and we're left with 222.
Append the next digit (5) from the dividend to 222 and continue with: 2225 / 417

Moving on to step 4:
417 can be fit into 2225 5 times, resulting in a remainder of 140.
Record the quotient 5 as the next digit in the result. 
Result so far: 15.0
Deduct 2085 from 2225 and we're left with 140.
Bring next digit (9) of the dividend behind the 140 and repeat the process: 1409 / 417

Step 5:
417 goes into 1409 3 times with a remainder of 158.
Put 3 as the next digit of the answer. 
Result so far: 153.0
Deduct 1251 from 1409 and we're left with 158.
Include the next digit (1) from the dividend after 158, then repeat: 1581 / 417

On to step 6:
If we divide 1581 by 417, we get 3 and a remainder of 330.
Write down 3 as next digit of the result. 
Result so far: 1533.0
Subtract 1251 from 1581 to get 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3300, and continue the process.

Let's proceed to step 7:
417 can be fit into 3300 7 times, resulting in a remainder of 381.
Write down 7 as next digit of the result. 
Result so far: 1533.7
Subtracting 2919 from 3300 leaves us with 381.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3810, and continue the process.

Going ahead to step 8:
417 can be fit into 3810 9 times, resulting in a remainder of 57.
The number 9 becomes the next digit in our result. 
Result so far: 1533.79
Subtract 3753 from 3810 to get 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Moving on to step 9:
417 can be fit into 570 1 times, resulting in a remainder of 153.
Record the quotient 1 as the next digit in the result. 
Result so far: 1533.791
Subtracting 417 from 570 leaves us with 153.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1530, and continue the process.

On to step 10:
417 goes into 1530 3 times with a remainder of 279.
Record the quotient 3 as the next digit in the result. 
Result so far: 1533.7913
If we subtract 1251 from 1530, we get 279.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2790, and continue the process.

Let's proceed to step 11:
When dividing 2790 by 417, we get 6 with a remainder of 288.
The number 6 becomes the next digit in our result. 
Result so far: 1533.79136
Deduct 2502 from 2790 and we're left with 288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

Advancing to step 12:
The number 417 fits into 2880 6 times, leaving a remainder of 378.
Use 6 as the next digit of our solution. 
Result so far: 1533.791366
Subtracting 2502 from 2880 leaves us with 378.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3780, and continue the process.

The final result is 1533.791366 with a remainder of 3.78e-05.