We're dividing 644585 by 7 
We're looking to find how many times 7 goes into 644585.

Let's proceed to step 1:
If we divide 6 by 7, we get 0 and a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Append the next digit (4) from the dividend to 6 and continue with: 64 / 7

Let's proceed to step 2:
7 can be fit into 64 9 times, resulting in a remainder of 1.
The next digit of our result is 9. 
Result so far: 9.0
If we take 63 away from 64, we end up with 1.
Bring next digit (4) of the dividend behind the 1 and repeat the process: 14 / 7

Moving on to step 3:
7 goes into 14 2 times with a remainder of 0.
The next digit of our result is 2. 
Result so far: 92.0
If we subtract 14 from 14, we get 0.
Take the next digit (5) from the dividend and append it to 0, then repeat: 5 / 7

On to step 4:
5 divided by 7 is 0 with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 920.0
Subtract 0 from 5 to get 5.
Fetch the next digit (8) from the dividend, attach it to 5 and continue: 58 / 7

Going ahead to step 5:
58 divided by 7 is 8 with a remainder of 2.
Write down 8 as next digit of the result. 
Result so far: 9208.0
Deduct 56 from 58 and we're left with 2.
Include the next digit (5) from the dividend after 2, then repeat: 25 / 7

Let's proceed to step 6:
7 goes into 25 3 times with a remainder of 4.
The next digit of our result is 3. 
Result so far: 92083.0
Deduct 21 from 25 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 7:
When dividing 40 by 7, we get 5 with a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 92083.5
Subtract 35 from 40 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 8:
50 divided by 7 is 7 with a remainder of 1.
The number 7 becomes the next digit in our result. 
Result so far: 92083.57
If we subtract 49 from 50, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 9:
10 divided by 7 is 1 with a remainder of 3.
Use 1 as the next digit of our solution. 
Result so far: 92083.571
If we subtract 7 from 10, we 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.

On to step 10:
When dividing 30 by 7, we get 4 with a remainder of 2.
Use 4 as the next digit of our solution. 
Result so far: 92083.5714
Subtract 28 from 30 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.

Let's proceed to step 11:
7 can be fit into 20 2 times, resulting in a remainder of 6.
Put 2 as the next digit of the answer. 
Result so far: 92083.57142
Subtract 14 from 20 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.

Let's proceed to step 12:
The number 7 fits into 60 8 times, leaving a remainder of 4.
The next digit of our result is 8. 
Result so far: 92083.571428
If we subtract 56 from 60, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 13:
40 divided by 7 is 5 with a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 92083.5714285
Subtracting 35 from 40 leaves us 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:
7 can be fit into 50 7 times, resulting in a remainder of 1.
Put 7 as the next digit of the answer. 
Result so far: 92083.57142857
If we subtract 49 from 50, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

The final outcome is 92083.57142857, with a leftover of 1e-09.