We look at the division of 98562660 by 644 
We want to figure out the number of times 98562660 can be divided by 644.

Let's proceed to step 1:
9 divided by 644 is 0 with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Fetch the next digit (8) from the dividend, attach it to 9 and continue: 98 / 644

On to step 2:
98 divided by 644 is 0 with a remainder of 98.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 98, we get 98.
Bring next digit (5) of the dividend behind the 98 and repeat the process: 985 / 644

Advancing to step 3:
If we divide 985 by 644, we get 1 and a remainder of 341.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 644 from 985 and we're left with 341.
Include the next digit (6) from the dividend after 341, then repeat: 3416 / 644

Advancing to step 4:
When dividing 3416 by 644, we get 5 with a remainder of 196.
Use 5 as the next digit of our solution. 
Result so far: 15.0
If we take 3220 away from 3416, we end up with 196.
Take the next digit (2) from the dividend and append it to 196, then repeat: 1962 / 644

Moving on to step 5:
The number 644 fits into 1962 3 times, leaving a remainder of 30.
Record the quotient 3 as the next digit in the result. 
Result so far: 153.0
Subtracting 1932 from 1962 leaves us with 30.
Append the next digit (6) from the dividend to 30 and continue with: 306 / 644

Step 6:
When dividing 306 by 644, we get 0 with a remainder of 306.
Put 0 as the next digit of the answer. 
Result so far: 1530.0
Deduct 0 from 306 and we're left with 306.
Include the next digit (6) from the dividend after 306, then repeat: 3066 / 644

On to step 7:
The number 644 fits into 3066 4 times, leaving a remainder of 490.
The number 4 becomes the next digit in our result. 
Result so far: 15304.0
Subtract 2576 from 3066 to get 490.
Include the next digit (0) from the dividend after 490, then repeat: 4900 / 644

Moving on to step 8:
4900 divided by 644 is 7 with a remainder of 392.
Use 7 as the next digit of our solution. 
Result so far: 153047.0
Subtracting 4508 from 4900 leaves us with 392.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

On to step 9:
3920 divided by 644 is 6 with a remainder of 56.
Write down 6 as next digit of the result. 
Result so far: 153047.6
Subtracting 3864 from 3920 leaves us with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Moving on to step 10:
If we divide 560 by 644, we get 0 and a remainder of 560.
The number 0 becomes the next digit in our result. 
Result so far: 153047.6
If we subtract 0 from 560, we get 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

On to step 11:
The number 644 fits into 5600 8 times, leaving a remainder of 448.
Record the quotient 8 as the next digit in the result. 
Result so far: 153047.608
Subtract 5152 from 5600 to get 448.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4480, and continue the process.

Going ahead to step 12:
The number 644 fits into 4480 6 times, leaving a remainder of 616.
Record the quotient 6 as the next digit in the result. 
Result so far: 153047.6086
Deduct 3864 from 4480 and we're left with 616.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6160, and continue the process.

Advancing to step 13:
6160 divided by 644 is 9 with a remainder of 364.
Record the quotient 9 as the next digit in the result. 
Result so far: 153047.60869
If we take 5796 away from 6160, we end up with 364.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3640, and continue the process.

Step 14:
If we divide 3640 by 644, we get 5 and a remainder of 420.
The next digit of our result is 5. 
Result so far: 153047.608695
The remainder is 420 after subtracting 3220 from 3640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

Let's proceed to step 15:
644 goes into 4200 6 times with a remainder of 336.
The number 6 becomes the next digit in our result. 
Result so far: 153047.6086956
Subtract 3864 from 4200 to get 336.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3360, and continue the process.

Let's proceed to step 16:
The number 644 fits into 3360 5 times, leaving a remainder of 140.
Put 5 as the next digit of the answer. 
Result so far: 153047.60869565
The remainder is 140 after subtracting 3220 from 3360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

The final result is 153047.60869565 with a remainder of 1.4e-07.