Let's divide 98574596 by 644
We want to divide 98574596 by 644.

Going ahead to step 1:
If we divide 9 by 644, we get 0 and a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Include the next digit (8) from the dividend after 9, then repeat: 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.
Include the next digit (5) from the dividend after 98, then repeat: 985 / 644

Let's proceed to step 3:
644 can be fit into 985 1 times, resulting in a remainder of 341.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 644 from 985 and we're left with 341.
Bring next digit (7) of the dividend behind the 341 and repeat the process: 3417 / 644

Moving on to step 4:
When dividing 3417 by 644, we get 5 with a remainder of 197.
Use 5 as the next digit of our solution. 
Result so far: 15.0
If we take 3220 away from 3417, we end up with 197.
Fetch the next digit (4) from the dividend, attach it to 197 and continue: 1974 / 644

Moving on to step 5:
644 goes into 1974 3 times with a remainder of 42.
Put 3 as the next digit of the answer. 
Result so far: 153.0
If we subtract 1932 from 1974, we get 42.
Grab the next digit (5) from the dividend, add it to 42, then carry on: 425 / 644

On to step 6:
The number 644 fits into 425 0 times, leaving a remainder of 425.
The number 0 becomes the next digit in our result. 
Result so far: 1530.0
Subtracting 0 from 425 leaves us with 425.
Take the next digit (9) from the dividend and append it to 425, then repeat: 4259 / 644

Moving on to step 7:
When dividing 4259 by 644, we get 6 with a remainder of 395.
Write down 6 as next digit of the result. 
Result so far: 15306.0
Deduct 3864 from 4259 and we're left with 395.
Append the next digit (6) from the dividend to 395 and continue with: 3956 / 644

Going ahead to step 8:
3956 divided by 644 is 6 with a remainder of 92.
Record the quotient 6 as the next digit in the result. 
Result so far: 153066.0
Subtract 3864 from 3956 to get 92.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

Going ahead to step 9:
If we divide 920 by 644, we get 1 and a remainder of 276.
The next digit of our result is 1. 
Result so far: 153066.1
Subtracting 644 from 920 leaves us with 276.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2760, and continue the process.

On to step 10:
644 goes into 2760 4 times with a remainder of 184.
The number 4 becomes the next digit in our result. 
Result so far: 153066.14
Deduct 2576 from 2760 and we're left with 184.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1840, and continue the process.

Step 11:
If we divide 1840 by 644, we get 2 and a remainder of 552.
Put 2 as the next digit of the answer. 
Result so far: 153066.142
If we take 1288 away from 1840, we end up with 552.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5520, and continue the process.

Moving on to step 12:
644 can be fit into 5520 8 times, resulting in a remainder of 368.
The number 8 becomes the next digit in our result. 
Result so far: 153066.1428
Deduct 5152 from 5520 and we're left with 368.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3680, and continue the process.

Going ahead to step 13:
3680 divided by 644 is 5 with a remainder of 460.
Put 5 as the next digit of the answer. 
Result so far: 153066.14285
Deduct 3220 from 3680 and we're left with 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4600, and continue the process.

Let's proceed to step 14:
4600 divided by 644 is 7 with a remainder of 92.
Record the quotient 7 as the next digit in the result. 
Result so far: 153066.142857
If we subtract 4508 from 4600, we get 92.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

Let's proceed to step 15:
When dividing 920 by 644, we get 1 with a remainder of 276.
Write down 1 as next digit of the result. 
Result so far: 153066.1428571
If we take 644 away from 920, we end up with 276.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2760, and continue the process.

Step 16:
644 can be fit into 2760 4 times, resulting in a remainder of 184.
The next digit of our result is 4. 
Result so far: 153066.14285714
Subtract 2576 from 2760 to get 184.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1840, and continue the process.

After the division, we end up with 153066.14285714 and a remainder of 1.84e-07.