We look at the division of 644476 by 87 
We want to divide 644476 by 87.

Advancing to step 1:
When dividing 6 by 87, we get 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Fetch the next digit (4) from the dividend, attach it to 6 and continue: 64 / 87

Let's proceed to step 2:
When dividing 64 by 87, we get 0 with a remainder of 64.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 64, we get 64.
Fetch the next digit (4) from the dividend, attach it to 64 and continue: 644 / 87

Advancing to step 3:
644 divided by 87 is 7 with a remainder of 35.
Use 7 as the next digit of our solution. 
Result so far: 7.0
Subtracting 609 from 644 leaves us with 35.
Grab the next digit (4) from the dividend, add it to 35, then carry on: 354 / 87

Step 4:
87 goes into 354 4 times with a remainder of 6.
Use 4 as the next digit of our solution. 
Result so far: 74.0
Deduct 348 from 354 and we're left with 6.
Include the next digit (7) from the dividend after 6, then repeat: 67 / 87

Going ahead to step 5:
87 goes into 67 0 times with a remainder of 67.
The next digit of our result is 0. 
Result so far: 740.0
If we subtract 0 from 67, we get 67.
Bring next digit (6) of the dividend behind the 67 and repeat the process: 676 / 87

Let's proceed to step 6:
676 divided by 87 is 7 with a remainder of 67.
Write down 7 as next digit of the result. 
Result so far: 7407.0
If we subtract 609 from 676, we get 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Moving on to step 7:
When dividing 670 by 87, we get 7 with a remainder of 61.
The number 7 becomes the next digit in our result. 
Result so far: 7407.7
Subtract 609 from 670 to get 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

On to step 8:
If we divide 610 by 87, we get 7 and a remainder of 1.
Write down 7 as next digit of the result. 
Result so far: 7407.77
If we subtract 609 from 610, 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.

Our division results in 7407.77 with a remaining 0.001.