We're dividing 87848654 by 644 
We want to divide 87848654 by 644.

Moving on to step 1:
When dividing 8 by 644, we get 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Append the next digit (7) from the dividend to 8 and continue with: 87 / 644

Moving on to step 2:
If we divide 87 by 644, we get 0 and a remainder of 87.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 87 to get 87.
Append the next digit (8) from the dividend to 87 and continue with: 878 / 644

Let's proceed to step 3:
878 divided by 644 is 1 with a remainder of 234.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 234 after subtracting 644 from 878.
Fetch the next digit (4) from the dividend, attach it to 234 and continue: 2344 / 644

Step 4:
644 goes into 2344 3 times with a remainder of 412.
Write down 3 as next digit of the result. 
Result so far: 13.0
Subtracting 1932 from 2344 leaves us with 412.
Grab the next digit (8) from the dividend, add it to 412, then carry on: 4128 / 644

Advancing to step 5:
644 can be fit into 4128 6 times, resulting in a remainder of 264.
The number 6 becomes the next digit in our result. 
Result so far: 136.0
The remainder is 264 after subtracting 3864 from 4128.
Bring next digit (6) of the dividend behind the 264 and repeat the process: 2646 / 644

Moving on to step 6:
644 goes into 2646 4 times with a remainder of 70.
The number 4 becomes the next digit in our result. 
Result so far: 1364.0
Deduct 2576 from 2646 and we're left with 70.
Take the next digit (5) from the dividend and append it to 70, then repeat: 705 / 644

On to step 7:
644 goes into 705 1 times with a remainder of 61.
Put 1 as the next digit of the answer. 
Result so far: 13641.0
The remainder is 61 after subtracting 644 from 705.
Take the next digit (4) from the dividend and append it to 61, then repeat: 614 / 644

Going ahead to step 8:
When dividing 614 by 644, we get 0 with a remainder of 614.
Record the quotient 0 as the next digit in the result. 
Result so far: 136410.0
Subtract 0 from 614 to get 614.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6140, and continue the process.

Advancing to step 9:
When dividing 6140 by 644, we get 9 with a remainder of 344.
The next digit of our result is 9. 
Result so far: 136410.9
If we take 5796 away from 6140, we end up with 344.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3440, and continue the process.

Step 10:
3440 divided by 644 is 5 with a remainder of 220.
Use 5 as the next digit of our solution. 
Result so far: 136410.95
The remainder is 220 after subtracting 3220 from 3440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Advancing to step 11:
644 goes into 2200 3 times with a remainder of 268.
Put 3 as the next digit of the answer. 
Result so far: 136410.953
Deduct 1932 from 2200 and we're left with 268.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2680, and continue the process.

Advancing to step 12:
The number 644 fits into 2680 4 times, leaving a remainder of 104.
Record the quotient 4 as the next digit in the result. 
Result so far: 136410.9534
If we take 2576 away from 2680, we end up with 104.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1040, and continue the process.

On to step 13:
When dividing 1040 by 644, we get 1 with a remainder of 396.
The next digit of our result is 1. 
Result so far: 136410.95341
If we subtract 644 from 1040, we get 396.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3960, and continue the process.

Step 14:
The number 644 fits into 3960 6 times, leaving a remainder of 96.
Put 6 as the next digit of the answer. 
Result so far: 136410.953416
Subtracting 3864 from 3960 leaves us with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Going ahead to step 15:
The number 644 fits into 960 1 times, leaving a remainder of 316.
Record the quotient 1 as the next digit in the result. 
Result so far: 136410.9534161
Subtracting 644 from 960 leaves us with 316.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3160, and continue the process.

Going ahead to step 16:
If we divide 3160 by 644, we get 4 and a remainder of 584.
The number 4 becomes the next digit in our result. 
Result so far: 136410.95341614
The remainder is 584 after subtracting 2576 from 3160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5840, and continue the process.

The final result is 136410.95341614 with a remainder of 5.84e-07.